CN108207961A

CN108207961A - A kind of Synergistic herbicidal composition

Info

Publication number: CN108207961A
Application number: CN201611198926.1A
Authority: CN
Inventors: 罗昌炎; 詹姆斯.T.布里斯托
Original assignee: Jiangsu Rotam Chemical Co Ltd
Current assignee: Jiangsu Rotam Chemical Co Ltd
Priority date: 2016-12-22
Filing date: 2016-12-22
Publication date: 2018-06-29

Abstract

The present invention provides a kind of Synergistic herbicidal composition, and active component is made of compound (A) and compound (B), and wherein compound (A) is the compound described by formula (I) or its agricultural salt or ester；Compound (B) is selected from 2 first, 4 chlorine and its derivative；

Description

A kind of Synergistic herbicidal composition

Technical field

The present invention relates to a kind of Synergistic herbicidal compositions.The invention further relates to a kind of undesirable plants of prevention Method.

Background technology

In recent years, since some herbicide kind large area are used alone, many weeds is already led to and are developed immunity to drugs.Together When, grass when weeds occur is mutually complicated, and grassy weed, broad leaved weed, nutgrass flatsedge multiclass weeds mix life, and single variety herbicide makes With the defects of cannot solving farmland weed, can show in a certain respect and limitation.So, however it remains for effectively preventing The composition of undesirable plant and the demand of method.

At present, herbicide is limited by crop safety, and herbicide controlling spectrum is also limited, and a kind of herbicide single dose is used alone cannot be complete The full generation for efficiently controlling crop field weed, another aspect herbicide dosage is excessive or dispenser is uneven also be easy to cause to working as Season crop or succession crop generate unacceptable toxicity.

Invention content

The purpose of the present invention is part provides a kind of Synergistic herbicidal composition against the above deficiency, with particularly advantageous side " synergy " to Weeds distribution that formula is obtained needed for technical staff acts on or even including uncontrollable certain ruderal species Class.Moreover, the amount of application of single component in combination can be significantly reduced using the present composition, the plant to crop is reduced Toxicity.

" synergy " effect refers in some cases, than individually apply when having shown herbicidal active ingredient combinations application Used time is more effective." synergy " effect refers to two or more factor interactions so that effect ratio upon combination is based on dividing Effect that Shi Yong be desired by the response of each factor is good.

A kind of Synergistic herbicidal composition, active component are made of compound (A) and compound (B)；Wherein compound (A) For the compound described by formula (I) or its agricultural salt or ester；Compound (B) is selected from 2 first, 4 chlorine and its derivative.

Formula（I）Compound chemical name is the chloro- 6- of 4- amino -3-（The fluoro- 3- methoxyphenyls of the chloro- 2- of 4-）Pyridine -2- formic acid.Formula （I）Compound is had been described in US7314849.Formula（I）Use of a compound includes preventing a variety of non-farming objects and cultivation crop Undesirable plant, including grass family, broad-leaved section and sedge weed.

Compound (A) is the compound described by formula (I) or its agricultural salt or ester.The ester of the compound of formula (I) description is excellent Select N-butyl, methyl esters, benzyl ester；The preferred sodium of salt, potassium, magnesium, the triethylamine of the compound of formula (I) description.

The preferred methyl esters of ester of the compound of formula (I) description：Fluorine chloropyridine ester（Halauxifen-methyl）；Chemical name For the chloro- 6- of 4- amino -3-（The fluoro- 3- methoxyphenyls of the chloro- 2- of 4-）Pyridine -2- methyl formates；Fluorine chloropyridine ester has been described in In US7314849.It is with following structures：

The preferred sylvite of salt of the compound of formula (I) description；Fluorine chloropyridine sylvite chemical name is：The chloro- 6- of 4- amino -3-（4- The chloro- fluoro- 3- methoxyphenyls of 2-）Pyridine -2- potassium formates.It is with following structures：

Compound (B) is selected from 2 first, 4 chlorine and its derivative；2 first, 4 chlorine, English name MCPA, chemical name are：2- methyl -4- chlorine Phenoxy acetic acid, molecular structural formula are represented by Formula II：

Compound B preferably is selected from 2 first, 4 chlorine isopropyl acid, Thistrol, Thistrol butyl ester, the different monooctyl ester of 2 first, 4 chlorine, 2 first, 4 chlorine Second thioesters, 2 first, 4 chlorine thioethyl ester, 2 first, 4 chlorine sodium salt, 2 first, 4 chlorine sylvite, 2 first, 4 chlorine isopropyl amine salt.

The weight ratio of the compound (A) and compound (B) is 1:1-1:200, preferably 1:5-1:150, further preferably 1:10- 1:100, more preferable 1:10-1:80, more preferable 1:10-1:60, more preferable 1:10-1:50.

The compound (A) and the weight range of compound (B) can also be 1:1-1:200,1:1-1:190,1:1-1: 180,1:1-1:170,1:1-1:60,1:1-1:150,1:1-1:140,1:1-1:130,1:1-1:120,1:1-1:110, more It is preferred that 1:1-1:100, more preferable 1:5-1:100,1:5-1:80,1:5-1:70,1:5-1:50, more preferable 1:10-1:50.

The compound (A) and the weight range of compound (B) can also be 1:1,1:2,1:3,1:4,1:5,1:6,1: 7,1:8,1:9,1:10,1:11,1:12,1:13,1:14,1:15,1:16,1:17,1:18,1:19,1:20,1:21,1:22,1: 23,1:24,1:25,1:26,1:27,1:28,1:29,1:30,1:31,1:32,1:33,1:34,1:35,1:36,1:37,1: 38,1:39,1:40,1:41,1:42,1:43,1:44,1:45,1:46,1:47,1:48,1:49,1:50,1:55,1:60,1: 65,1:70,1:75,1:80,1:85,1:90,1:95,1:100,1:110,1:120,1:130,1:140,1:150,1:160,1: 170,1:180,1:190,1:200。

The present invention also provides a kind of Synergistic herbicidal composition, active component is made of compound (A) and compound (B), The content of compound (A) and compound (B) accounts for 1%-90%, the preferably 5%-80% of the Synergistic herbicidal composition, more preferably 10%-80%, more preferable 15%-80%, more preferable 20%-80%, more preferable 30%-80%, more preferable 40%-80%, the compound (A) For the compound described by formula (I) or its agricultural salt or ester；Compound (B) is selected from 2 first, 4 chlorine and its derivative.

The present invention also provides a kind of Synergistic herbicidal composition, active component is made of compound (A) and compound (B), What the content of compound (A) and compound (B) accounted for the Synergistic herbicidal composition can also be 1%, 3%, 5%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%.

The present invention also provides a kind of Synergistic herbicidal composition, active component is made of compound (A) and compound (B), Further include filler and/or surfactant.

The dosage form of the Synergistic herbicidal composition is wettable powder, water-soluble granule, water-soluble liquor, missible oil, is hanged Floating agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, microcapsule suspension-suspendinagent agent, water dispersible granules, ultra low volume liquids, piece Agent, low capacity dispersible granule, pill or dry suspending agent.

Synergistic herbicidal composition of the present invention also contains herbicide-safener.

The herbicide-safener is selected from 1,8- naphthalic anhydrides（1,8- Naphthalenedicarboxylicanhydride）, benoxacor（Benoxacor）, cloquintocetmexyl（Cloquintocet- mexyl）, fenchlorazole（Fenchlorazole-ethyl）, furilazole（Furilazole）, oxalane（2- dichloromethyl-2-methyl-1,3-dioxolane）, cyometrinil（Cyometrinil）, oxabetrinil （Oxabetrinil）, fluxofenim（Fluxofenim）, fenclorim（Fenclorim）, flurazole（Flurazole）Or desorpenic （Acetamide）, isoxadifen（Isoxadifen）, mefenpyrdiethyl（Mefenpyr-diethyl）, cloquitocet_mexyl （Cloquintocet-mexyl）, allyl dichloride amine（Dichlormid）, two acetoacetic ester of pyrroles（Mefenpyr-ethyl）, herbicide It is red（Benthiocarb）, study on brassinolide（Brassinolide）, daimuron（Daimuron）, dichlormide （Dichlormid）, dimepiperate (Dimepiperate), disulfoton（Disulfoton）, fluxofenim（Fluxofenim）, solution grass Furan（Furilazole）, isoxadifen ethyl ester（Isoxadifen-ethyl）, in N- phenyl-sulfonyl benzoic amides extremely Few one kind.

Synergistic herbicidal composition of the present invention also may include the various reactive compounds of other components, such as selected from Fungicide, insecticide, acaricide, nematicide, bird repellent, soil conditioner, nutrient for plants (fertilizer) and Structure is different from the herbicide and plant growth regulator of compound (A) and compound (B).

Synergistic herbicidal composition of the present invention further also may include liquid fertilizer or solid fertilizer.

A kind of Synergistic herbicidal composition is in the purposes for preventing undesirable plant germination or growth.

A kind of Synergistic herbicidal composition is in prevention grassy weed, sedge weed, the undesirable plant of broad-leaved section weeds Object germinates or the purposes of growth.

Synergistic herbicidal composition of the present invention is to big fringe amur foxtail (Alopecurusmyosuroides), wild Violet（Viola arvensis), wild oat (Avena fatua L.), annual Itanlian rye (Annual Ryegrass), lamb's-quarters (Chenopodium album L.), chickweed (Stellaria media (L.) Cyr.), clearvers （Galium aparine L.), firefly Lin（Schoenoplectus juncoides Roxb.), difformed galingale herb（Cyperus Difformis L.) control in be less than rate of application when each compound is administered alone shown synergistic function.

The Synergistic herbicidal composition can be used for preventing the undesirable plant of following position：Directly broadcast in sowing, water The rice of kind and transplanting, cereal, wheat, barley, rye, sorghum, corn, sugarcane, sunflower, rape, canola, sweet tea Dish, soybean, cotton, pineapple, grazing, grassplot, fallow ground, turf, arbor or liana orchard, aquatic organism, plantation crops, vegetable Around dish, industrial vegetation management or road.

The Synergistic herbicidal composition of the present invention can be especially useful for prevention rice, wheat, barley, rye, rape, low mustard Gramineae plant, nutgrass flatsedge plant, broad leaved plant are not wished in sour rape, beet, corn, turf, cotton, vegetables, sugarcane, soybean crops The germination of the plant of prestige or the purposes of growth.

The Synergistic herbicidal composition of the present invention is used to prevent undesirable plant germination or growth in useful crop Purposes, the Herbicidal combinations are resistant to by the useful crop.

A kind of method for preventing undesirable plant, including：（i）Before undesirable plant germination（Before bud）;（ii） After undesirable plant germination（After bud）Or（iii）（i）With（ii）When, by the collaboration of the present invention of herbicidally effective amount Property Herbicidal combinations are applied to undesirable plant or growth place.

A kind of method for preventing undesirable plant, including making undesirable plant or growth place and herbicidally effective amount Described Synergistic herbicidal composition contact.Herbicidally effective amount refers to the herbicidal active component applied to prevent undesirable plant Amount.

A kind of method for preventing undesirable plant, Synergistic herbicidal composition of the present invention is applied to and is not intended to Plant or growth place to prevent the germination of undesirable plant or growth.

A kind of method for preventing undesirable plant, by Synergistic herbicidal composition of the present invention be applied to soil or To prevent the germination of undesirable plant or growth in water.

A kind of method for preventing undesirable plant, by the compound in Synergistic herbicidal composition of the present invention (A) and compound (B) collectively or individually is applied to undesirable plant or growth place to prevent undesirable plant Germination or growth.

A kind of method for preventing undesirable plant, by the compound (A) in the Synergistic herbicidal composition of the present invention and Compound (B) collectively or individually is applied in soil or water to prevent the germination of undesirable plant or growth.

A kind of method for preventing undesirable plant, including by the synergistic herbicidal compositions of the present invention useful crop plant It is applied in the presence of other reproductive parts of strain, the seed of useful crop or useful crop.

A kind of method for preventing undesirable plant, including Synergistic herbicidal composition of the present invention is added to filling It irrigates in water, undesirable plant or growth place is administered to by using ground or aerial dusters, sprayer, grain scattering machine.

A kind of Synergistic herbicidal composition advantage：

A kind of Synergistic herbicidal composition of the present invention obtain in a particularly advantageous manner needed for technical staff to Weeds distribution " synergy " acts on or even including uncontrollable certain weeds type.Moreover, it can significantly be dropped using the present composition The amount of application of single component in low combination, reduces the phytotoxicity to crop.

When a kind of Synergistic herbicidal composition of the present invention has shown that herbicidal active ingredient combinations application when ratio is administered alone More effectively." synergy " effect refers to two or more factor interactions so that effect ratio upon combination is based on applying respectively It is good with the effect desired by the response of each factor.

Specific embodiment

The object of the present invention is to provide a kind of Synergistic herbicidal compositions, and active component is by compound (A) and compound (B) Composition；Wherein compound (A) is the compound described by formula (I) or its agricultural salt or ester；Compound (B) selected from 2 first, 4 chlorine and its Derivative.

The weight ratio of the compound (A) and compound (B) is the compound (A) and the weight ratio of compound (B) is 1:1- 1:200, preferably 1:5-1:150, further preferably 1:10-1:100, more preferable 1:10-1:80, more preferable 1:10-1:60, more preferable 1: 10-1:50。

Compound (A) is the compound described by formula (I) or its agricultural salt or ester；Formula（I）Compound chemical name is 4- The chloro- 6- of amino -3-（The fluoro- 3- methoxyphenyls of the chloro- 2- of 4-）Pyridine -2- formic acid.Formula（I）Compound has been described in In US7314849.Formula（I）Use of a compound includes preventing the undesirable plant of a variety of non-farming objects and cultivation crop, including Grass family, broad-leaved section and sedge weed.

Compound (A) is the compound described by formula (I) or its agricultural salt or ester.The ester of the compound of formula (I) description is preferably just Butyl ester, methyl esters, benzyl ester；The preferred sodium of salt, potassium, magnesium, the triethylamine of the compound of formula (I) description.

Compound (B) is selected from 2 first, 4 chlorine and its derivative.Including 2 first, 4 chloric acid, 2 first, 4 villaumite, 2 first, 4 chlorine ester.Suitable salt includes Derived from alkali or alkaline earth metal those and derived from those of ammonia and amine.Preferred cation includes sodium, potassium, magnesium.It is excellent The amine salt of choosing is derived from those following：Ammonia, methylamine, dimethylamine, trimethylamine, isopropylamine, monoethanolamine, diethanol amine, three Ethanol amine, diglycolamine, triisopropanolamine, choline, 2- methylsulfanies propylamine, diallylamine, 2- butoxyethylamines, morpholine, Cyclo-dodecyl amine or benzyl amine.Amine salt is often preferably as they are water-soluble and itself are suitble to prepare it is expected Aqueous herbicidal composition.Suitable ester is included derived from C1-C12 alkylols, C3-C12 alkenyl alcohols or C3-C12 alkynyl alcohol（Example Such as methanol, isopropanol, butanol, 2-Ethylhexyl Alcohol, butyl cellosolve, methoxypropanol, allyl alcohol, propilolic alcohol or cyclohexanol）'s Those esters and thioethyl ester, second thioesters etc..

Compound B preferably is selected from 2 first, 4 chlorine isopropyl acid, Thistrol, Thistrol butyl ester, the different monooctyl ester of 2 first, 4 chlorine, 2 first 4 chloroethene thioesters, 2 first, 4 chlorine thioethyl ester, 2 first, 4 chlorine sodium salt, 2 first, 4 chlorine sylvite, 2 first, 4 chlorine isopropyl amine salt.

2 first, 4 chlorine and its derivative are phenoxy acetic acid class selectivity Uptake and translocation hormone like herbicide, are easily inhaled by root and leaf portion It receives and conducts, destroy the conducting tissue of dicotyledon, growth development is made to be interfered, cauline leaf distortion, basal part of stem expands change Thick or cracking, swelling, it is mildew and rot and dead to split.2 first, 4 chlorine and its derivative are widely used on the crops such as rice, corn, wheat, use In preventing and kill off broad leaved weed, there is good safety to crop.

The present invention also provides a kind of Synergistic herbicidal composition, active component is made of compound (A) and compound (B), Active component is made of compound (A) and compound (B), and the content of compound (A) and compound (B) accounts for the Synergistic herbicidal The 1%-90% of composition, preferably 5%-80%, more preferable 10%-80%, more preferable 15%-80%, more preferable 20%-80%, more preferably 30%-80%, more preferable 40%-80%；The compound (A) is the compound described by formula (I) or its agricultural salt or ester；Compound (B) selected from 2 first, 4 chlorine and its derivative.

A kind of Synergistic herbicidal composition provided by the invention, active component are made of compound (A) and compound (B), The content of compound (A) and compound (B) accounts for the Herbicidal combinations and can also be 1%, 3%, 5%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%.

Synergistic function can reduce the rate of application of single herbicide, the effectiveness higher under identical rate of application, prevention Also controlled kind, prevention do not extend to single herbicide or a variety of herbicide tolerants or resistant kind, using the phase And/or the required number that is administered alone is reduced；And for user, obtain in economic and ecology advantageously Control of weeds system.

The Synergistic herbicidal composition of the present invention causes the activity of compound (A) and (B) to be cooperateed in a manner of unexpected Synergy has exceeded and uses single active constituent compound (A) and compound (B) accessible activity.

The Synergistic herbicidal composition of the present invention also may include one or more different from compound (A) and compound (B) And also serve as other reactive compounds of selective herbicide.

Preferably, it is described one or more different from compound (A) and compound (B) and also serve as selective herbicide Other reactive compounds include Acetochlor (acetochlor), Acibenzolar (acibenzolar), diazosulfide (acibenzolar-S-methyl), acifluorfen (acifluorfen), aclonifen (aclonifen), alachlor (alachlor), allidochlor (allidochlor), alloxydimsodium (alloxydim), ametryn (ametryn), amicarbazone (amicarbazone), amidosulfuron (amidosulfuron), chlorine Fampridine sour (aminopyralid), Amrol (amitrole), Amcide Ammate (ammonium sulfamate), ancymidol (ancymidol), anilofos (anilofos), Sulphur grass clever (asulam), atrazine (atrazine), azafenidin (azafenidin), azimsulfuron (azimsulfuron), benfuresate (benfuresate), bensulfuron-methyl (bensulfuron), bentazone (bentazone), double The phonetic humulone of benzene (benzfendizone), benzobicylon (benzobicyclon), benzofenap (benzofenap), fluorine sulfanilamide (SN) grass (benzofluor), fluorine benzofenap (bicyclopyrone), bispyribac-sodium (bispyribac-sodium), butachlor (butachlor), butafenacil (butafenacil), butralin (butralin), cafenstrole (cafenstrole), double acyls Careless amine (carbetamide), carfentrazone (carfentrazone), chlorimuronethyl (chlorimuron, chlorimuron- Ethyl), cycocel (chlormequat chloride), chlortoluron (chlorotoluron), chlorine sulphur are grand (chlorsulfuron), cinmethylin (cinmethylin), cinosulfuron (cinosulfuron), clethodim (clethodim), Clomazone (clomazone), clomeprop (clomeprop), clopyralid (clopyralid), cyanazine (cyanazine), cyclanilide (cyclanilide), cypromisulfuron (cyclosulfamuron), cycloxydim (cycloxydim), ring cafenstrole (cyprazole), daimuron (daimuron/dymron), Mediben (dicamba), dogstail Clever (diclofop-methyl), smart diclofop-methyl (diclofop-P-methyl), diclosulam (diclosulam), acetyl first Careless amine (diethatyl, diethatyl-ethyl), diflufenican (diflufenican), diflufenzopyr (diflufenzopyr, diflufenzopyr-sodium), oxazoles grand (dimefuron), dimepiperate (dimepiperate), Dimethachlor (dimethachlor), dimethametryn (dimethametryn), diphenamide (diphenamid), dipropetryn (dipropetryn), diquat dibromide (diquat), diuron (diuron), ethametsulfuron (ethametsulfuron, Ethametsulfuron-methyl), ethephon (CEPHA),2-(chloroethyl) phosphonic acid (ethephon), ethidimuron (ethidimuron), ethoxysulfuron (ethoxysulfuron), ethobenzanid (etobenzanid), oxazoles diclofop-methyl (fenoxaprop), fenoxaprops (fenoxaprop-P), oxazoles diclofop-methyl (fenoxaprop-ethyl), fentrazamide (fentrazamide), flazasulfuron (flazasulfuron), florasulam (florasulam), fluazifop (fluazifop), efficient fluazifop (fluazifop-P), fluazifop-P-butyl (fluazifop-butyl), efficient fluazifop butyl ester (fluazifop-P- Butyl), fluazolate (fluazolate), flucarbazonesodium (flucarbazone, flucarbazone-sodium), fluorine pyrrole Sulphur grand (flucetosulfuron), flufenacet (flufenacet), flumetralim (flumetralin), Flumetsulam (flumetsulam), flumioxazin (flumioxazin), alkynes grass amine (flumipropyn), fluometuron (fluometuron), fluorodifen (fluorodifen), fluoroglycofen-ethyl (fluoroglycofen, Fluoroglycofen-ethyl), flupoxam (flupoxam), flupyrsulfuron-methyl-sodium (flupyrsulfuron), fluridone (fluridone), fluorochloridone (flurochloridone), fluroxypyr (fluroxypyr), flurtamone (flurtamone), thiazole oxamide (fluthiamide), fomesafen (fomesafen), Glufosinate (glufosinate, glufosinate-ammonium), Glufosinate-P (glufosinate-P, glufosinate-P- Ammonium), Glufosinate-P- sodium salts (glufosinate-P-sodium), glyphosate (glyphosate), lyphosate isopropyl ammonium Salt (glyphosate-isopropylammonium), fluorine nitre sulfonamide (halosafen), halosulfuronmethyl (halosulfuron, halosulfuron-methyl), fluazifop-butyl (haloxyfop), smart fluazifop-butyl (haloxyfop- P), fluorine pyrrole second standing grain clever (haloxyfop-ethoxyethyl), smart fluorine pyrrole second standing grain clever (haloxyfop-P-ethoxyethyl), fluorine Pyrrole first standing grain spirit (haloxyfop-methyl), haloxyfop-methyl (haloxyfop-P-methyl), hexazinone (hexazinone), miaow oxalic acid (imazamethabenz, imazamethabenz-methyl), imazamox (imazamox, imazamox-ammonium), AC 263222 (imazapic), imazapyr (imazapyr, imazapyr- Isopropylammonium), imazaquin (imazaquin, imazaquin-ammonium), imazethapyr (imazethapyr, imazethapyr-ammonium), imazosulfuron (imazosulfuron), inabenfide (inabenfide), indanofan (indanofan), iodine metsulfuron-methyl (iodosulfuron, iodosulfuron-methyl- Sodium), ioxynil (ioxynil), isoproturon (isoproturon), Yi Evil acyl grass amine (isoxaben), Yi Evil chlorine humulones (isoxachlortole), isoxaflutoles (isoxaflutole), Yi Evil grass ethers (isoxapyrifop), lactofen (lactofen), lenacil (lenacil), mefenacet (mefenacet), chlorine sulphonyl grass amine (mefluidide), first piperazine Pyridine (mepiquat-chloride), mesosulfuronmethyl (mesosulfuron, mesosulfuron-methyl), mesotrione (mesotrione), methabenzthiazuron (methabenzthiazuron), azole amide (metamifop), metamitron (metamitron), metazachlor (metazachlor), methazole (methazole), Sulfonylurea (methiopyrsulfuron), methoxyphenone (methoxyphenone), methyldymron (methyldymron), isopropyl first grass Amine (metolachlor), S-metolachlor (S-metolachlor), metosulam (metosulam), metoxuron (metoxuron), metribuzin (metribuzin), metsulfuron-methyl (metsulfuron, metsulfuron-methyl), molinate (molinate), monosulfmeturon (monosulfuron), monosulfmeturon ester (monosulfuron ester), telvar (monuron), napropamide (napropamide), nicosulfuron (nicosulfuron), oxadiargyl (oxadiargyl), Evil humulones (oxadiazon), oxasulfuron (oxasulfuron), oxaziclomefones (oxaziclomefone), Oxyfluorfen (oxyfluorfen), paclobutrazol (paclobutrazol), paraquat (paraquat, paraquat dichloride), diformazan Penta clever (pendimethalin), Huan Wu Evil humulones (pentoxazone), pethoxamid (pethoxamid), picloram (picloram), fluorine pyrrole acyl grass amine (picolinafen), pinoxaden (pinoxaden), piperophos (piperophos), third Careless amine (pretilachlor), probenazole (probenazole), profluazol (profluazol), profluralin (prifluraline), clefoxidim (profoxydim), prometryn (prometryn), propanil (propanil), propazine (propazine), Chem hoe (propham), propisochlor (propisochlor), the phonetic sulphur of piperazine imidazoles (propyrisulfuron), propyzamide (propyzamide), prosulfocarb (prosulfocarb), prosulfuron (prosulfuron), prynachlor (prynachlor), pyraclonil (pyraclonil), pyraflufen-ethyl (pyraflufen, Pyraflufen-ethyl), pyrazosulfuron (pyrazosulfuron, pyrazosulfuron-ethyl)), iso-propyl-ester nitrofen (pyribambenz-isopropyl), propyl-ester nitorfen (pyribambenz-propyl), pyribenzoxim (pyribenzoxim), pyributicarb (pyributicarb), pyriftalid (pyriftalid), KIH 6127 (pyriminobac, Pyriminobac-methyl), Nylar (pyrimisulfan), pyrithiobacsodium (pyrithiobac, pyrithiobac- Sodium), pyroxasulfone, pyroxsulam (pyroxsulam), dichloro quinolinic acid (quinchlorac), chloromethane quinoline Sour (quinmerac), quizalofop-ethyl (quizalofop), Quizalotop-ethyl (quizalofop-P), Quizalotop-ethyl ethyl ester (quizalofop-P-ethyl), rimsulfuron (rimsulfuron), benzene flumetsulam (saflufenacil), Zhong Dingtong (secbumeton), sethoxydim (sethoxydim), Tupersan (siduron), sulphur humulone (sulcotrione), sulfentrazone (sulfentrazone), sulfometuronmethyl (sulfometuron, sulfometuron-methyl), Thidiazuron (thidiazuron), thifensulfuronmethyl (thifensulfuron, thifensulfuron-methyl), benthiocarb (thiobencarb), tiocarbazil (tiocarbazil), triasulfuron (triasulfuron), triaziflam (triaziflam), tribenuron-methyl (tribenuron, tribenuron-methyl), trichloroacetic acid (TCA), trichlopyr (triclopyr), tridiphane (tridiphane), trifloxysulfuron (trifloxysulfuron, trifloxysulfuron- Sodium), trefanocide (trifluralin), triflusulfuronmethyl (triflusulfuron), triflusulfuronmethyl methyl esters (triflusulfuron-methyl), trimeturon (trimeturon), TrinexAN_SNacethyl (trinexapac, trinexapac- Ethyl), tritosulfuron (tritosulfuron), tsitodef, uniconazole P (uniconazole), penoxsuam (enxosulam), cyhalofop-butyl（cyhalofop）, mesosulfuron（mesosulfuron）.

Although the compound (A) and compound (B) show good or even enough selection in a large amount of crops Property, in principle, in some crops, when particularly also being mixed with other smaller herbicides of selectivity, it is possible that making The phytotoxicity of object plant.So include Synergistic herbicidal composition according to the present invention and one or more safeners Composition be particularly advantageous.The safener is with effective quantity application of detoxifying, such as economically important crop or in fruit The plant toxicity side effect of herbicide used in being reduced in real plantation (plantation crops).

For example be suitable for below safener compound (including possible stereoisomer and agriculturally common ester or Salt)：The herbicide-safener is selected from 1,8- naphthalic anhydrides（1,8-Naphthalenedicarboxylicanhydride）、 Benoxacor（Benoxacor）, fenchlorazole（Fenchlorazole-ethyl）, furilazole（Furilazole）, oxalane （2-dichloromethyl-2-methyl-1,3-dioxolane）, cloquintocetmexyl（Cloquintocet-mexyl）, cyometrinil （Cyometrinil）, oxabetrinil（Oxabetrinil）, fluxofenim（Fluxofenim）, fenclorim（Fenclorim）, flurazole （Flurazole）Or desorpenic（Acetamide）, isoxadifen（Isoxadifen）, mefenpyrdiethyl（Mefenpyr- diethyl）, cloquitocet_mexyl（Cloquintocet-mexyl）, allyl dichloride amine（Dichlormid）, two acetoacetic ester of pyrroles （Mefenpyr-ethyl）, benthiocarb（Benthiocarb）, study on brassinolide（Brassinolide）, daimuron （Daimuron）, dichlormide（Dichlormid）, dimepiperate (Dimepiperate), disulfoton（Disulfoton）, fluorine Careless oxime（Fluxofenim）, the careless furan of solution（Furilazole）, isoxadifen ethyl ester（Isoxadifen-ethyl）, N- phenyl- At least one of sulfonyl benzoic acid amide.

Some known safeners are used as herbicide, and correspondingly, other than having herbicide effect to noxious plant, also rise To the effect of cover crop plant.

The weight ratio of Synergistic herbicidal composition and safener of the present invention generally depends on the rate of application of herbicide With the effect of the safener, and can change in a wide range, for example, 90000: 1-1: 5000, preferably 7000: 1-1: 1600th, especially 3000: 1-1: 500, particularly 1:100-20:In the range of 1.Safener can with compound A and compound B with Finished product preparation is prepared or supplies and use in the form of with the tank mix of the Synergistic herbicidal composition.

Synergistic herbicidal composition of the present invention also may include the various reactive compounds of other components, such as selected from Fungicide, insecticide, acaricide, nematicide, bird repellent, soil conditioner and plant growth regulator.

The Synergistic herbicidal composition of the present invention can be used for preventing the undesirable plant of following position：

Cereal crops, such as including：

Cereal (granule cereal) such as wheat (Triticum aestivum) and small wheat crops such as durum wheat (T.durum), one grained wheat (T.monococcum), emmer wheat (T.dicoccon) and spelt (T.spelta), rye (Secale cereale), triticale (Tritiosecale), barley (Hordeum vulgare)；

Corn (Zea mays)；

Sorghum (such as sugar grass (Sorghum bicolour))；

Rice (Oryza (Oryza) such as rice (Oryza sativa) and African rice (Oryzaglaberrima)；

Sugarcane；

Beans (Legumes (pulse family (Fabaceae))), such as including soybean (Glycine max.), peanut (Arachis Hypogaea) and legume crop such as pea (including pea (Pisum sativum), pigeonpea and cowpea), Kidney bean is (including broad bean (Vicia faba), black mixed coloured cowpea category (Vigna) and black Phaseolus (Phaseolus)) and hyacinth bean (Lens culinaris (lens culinaris var.)) ；

Cruciferae, such as including Canola (cabbage type rape (Brassica napus)), rape (Brassica napus), Cabbage (B.oleracea var.), leaf mustard such as leaf mustard (B.juncea), Chinese cabbage (B.campestris), broadbeaked mustard (B.narinosa), black mustard (B.nigra) and Mediterranean open country blister beetle (B.tournefortii)；And turnip (Brassica rapa var.)；

Other broad leaf crops, such as including sunflower, cotton, flax, linseed, sugar beet, potato and tomato；

TNV crops (TNV：Tree, kernel and rattan), such as including grape, citrus, a kind of fruit, such as apple, pear, etc., such as apple and pears, coffee, American pistachios And oil palm, drupe, such as peach, almond, walnut, olive, cherry, Li Hexing；

Turf, herbage and pasture；

Onion and garlic；

Bulb ornamental plant such as tulip and narcissus；

Coniferous tree and deciduous tree such as Pinus (Pinus), fir, Oak Tree, maple, Fructus Corni, hawthorn, Malus spectabilis and Rhamnus (Rhamnus) (sandlwood)；

Garden ornamental plant such as petunia, marigold, rose and toad's-mouth；

Such as road, railway, meadow, utility line around road；

Industrial vegetation.

Synergistic herbicidal composition of the present invention is preferred for occurring in the following useful crop of prevention undesirable Plant：Directly sowing, the rice that transplanting is sowed in water, wheat, rye, barley, oat, triticale, sorghum, corn, sugarcane, to Day certain herbaceous plants with big flowers, rape, canola, beet, soybean, cotton, pineapple, grazing, grassplot, fallow ground, turf, arbor or liana fruit Around garden, aquatic organism, plantation crops, vegetables, industrial vegetation management and reason.The Synergistic herbicidal composition is had by described It is resistant to crop.

The present invention provides the purposes that a kind of Synergistic herbicidal composition prevents undesirable plant germination or growth.

The present invention provides a kind of Synergistic herbicidal composition and is preventing and kill off broad-leaved section weeds, sedge weed, grassy weed Undesirable plant germination or the purposes of growth.

Undesirable plant is selected from rice：Wide leaf Brachiaria Griseb（Broadleaf signalgrass), lady's-grass （Digitaria sanguinalis (L.) Scop.), barnyard grass（Echinochloa crus_galli (L.) P. Beauv.), Paddy field barnyard grass（ Echinochloa oryoides）, field duckbilled grass（Ischaemum rugosum Salisb.), moleplant seed （Leptochloa chinensis (L.) Nees), moleplant seed of growing thickly (Leptochloa fascicularis (Lam.) Gray), difformed galingale herb（Cyperus difformis L.), chufa（Cyperus esculentus L.), cyperus iria （Cyperus iria L.), the rhizome of nutgrass flatsedge（Cyperus rotundus L.), water chestnut supports kind（Eleocharis species) (ELOSS), beach louse grass（Fimbristylis miliacea (L.) Vahl), firefly Lin（Schoenoplectus juncoides Roxb.), convexutricle sedge herb（Schoenoplectus maritimus L. Lye), aeschynomene kind（Aeschynomene Species), Alternanthera philoxeroides（Alternanthera philoxeroides (Mart.) Griseb.), the aquatic Chinese herbaceous peony of rhizoma alismatis Grass belongs to（Alisma plantago-aquatica L., amaranth kind（Amaranthus species),（Lamb's-quarters（) and amaranth pigweeds Platymiscium（Amaranths), AMASS), red water amaranth (Ammannia coccinea Rottb.), Eclipta prostrata（Eclipta Alba (L.) Hassk.) (Body intestines（American false daisy), ECLAL), different stamen flower is given birth in natural pond（Heteranthera Limosa (SW.) Willd./Vahl), pharbitis nilChoisy（Ipomoea hederacea (L.) Jacq.), Monochoria korsakowii （Monochoria korsakowii Regel＆Maack) (monochoria, MOOKA), Monochoria vaginalis（Monochoria vaginalis）, nakedflower triquetrousc murdannia herb（Murdannia nudiflora (L.) Brenan), mexicana（Rotala indica (Willd.) Koehne) (Indian toothcup, ROTIN), arrowhead kind（Sagittaria species) (arrowhead, SAGSS).

Rape, canola, wheat, rye, barley, oat, triticale, sorghum, corn, sugarcane, sunflower, sweet tea Undesirable plant is selected from big fringe amur foxtail in dish, soybean, cotton, pineapple, vegetables（Alopecurus myosuroides Huds.) (blackgrass, ALOMY), wild oat（Avena fatua L), downy brome（Bromus tectorum L.) (mound original bromegrass（Downy brome), BROTE), Itanlian rye（Lolium multiflorum Lam.) (Italy is black Wheat straw（Italian ryegrass), LOLMU), microspecies canary grass（Littleseed canarygrass), PHAMI), it is early Ripe standing grain（Poa annua L.), setaria glauca（Setaria pumila (Poir.) Roemer＆J. A. Schultes) it is (yellow Color green bristlegrass（Yellow foxtail), SETLU), green bristlegrass（Setaria viridis (L.) Beauv.) (green green bristlegrass （Green foxtail), SETVI), Amaranthus retroflexus（Amaranthus retroflexus L.) (red root amaranth（redroot Pigweed), AMARE), Brassica species（Brassica species) (BRSSS), lamb's-quarters（Chenopodium album L.) (common ash grass（Common lambsquarters), CHEAL), clearvers（Galium aparine L.), summer cypress（Kochia Scoparia (L.) Schrad.), Kansuense（Lamium purpureum L.) (the withered nettle of purple（purple Deadnettle), LAMPU), german chamomile (Matricariarecutita L.), german chamomile of suiting（Matricaria Matricarioides (Less.) Porter), corn poppy（Papaver rhoeas L.), wild-type buckwheat（wild Buckwheat), Herba Salsolae Ruthenicae（Salsola tragus L.), Europe sinapsis alba species（Sinapis species) (SINSS), Wild Europe sinapsis alba（Sinapis arvensis L.), chickweed（Stellaria media (L.) Vill.), Veronica persica （Veronica persica Poir.) (V.persica Poir（Persian speedwell), VERPE), wild violet（Viola Arvensis Murr.) or heartsease（Viola tricolor L .).

Undesirable plant is selected from artemisiifolia in pasture and grazing（Ambrosia artemisiifolia L.), blunt leaf Cassia （Cassia obtusifolia), spot corn flower (Centaurea maculosa auct. non Lam.), field bindweed （Convolvulus arvensis L.) (field bindweed, CONAR), pierce lettuce（Lactuca serriola L./ Torn.), ribwort (Plantago lanceolata L.), Rheum obtusifolia Linn（Rumex obtusifolius L.), thorn gold Portulaca grandiflora（Sida spinosa L.), wild Europe sinapsis alba（Sinapis arvensis L.), sowthistle（Sonchus arvensis L.) (perennial sowthistle, SONAR), goldenrod kind（Solidago species), taraxacum （Taraxacum officinale G.H. Weber ex Wiggers), white clover（Trifolium repens L.) (white clover, TRFRE) or Urtica dioica seed（Urtica dioica L.).

Synergistic herbicidal composition of the present invention preferably to big fringe amur foxtail (Alopecurusmyosuroides), Wild violet（Viola arvensis), wild oat (Avena fatua L.), annual Itanlian rye (Annual Ryegrass), lamb's-quarters (Chenopodium album L.), chickweed (Stellaria media (L.) Cyr.), clearvers （Galium aparine L.), firefly Lin（Schoenoplectus juncoides Roxb.), difformed galingale herb（Cyperus Difformis L.) control in be less than rate of application when each compound is administered alone shown synergistic function.

" undesirable plant " is understood to mean that all plants for being grown in the place for being not intended to growth.These can For, for example, noxious plant (such as unifacial leaf or broadleaf weed, grassy weed, sedge or undesired crop are planted Object), including for example to certain weeding active compounds (such as glyphosate, Glufosinate, atrazine, imidazolinone herbicide and Sulfonylurea) resistant those plants.

The present invention provides a kind of method for preventing undesirable plant, including：（i）Before undesirable plant germination （Before bud）;（ii）After undesirable plant germination（After bud）Or（iii）（i）With（ii）When, by the sheet of herbicidally effective amount The Synergistic herbicidal composition of invention is applied to undesirable plant or growth place.

A kind of method for preventing undesirable plant, by the compound (A) in the Synergistic herbicidal composition of the present invention and Compound (B) collectively or individually be applied to undesirable plant or growth place with prevent the germination of undesirable plant or Growth.

A kind of method for preventing undesirable plant growth, including：（i）Before undesirable plant germination（Before bud）; （ii）After undesirable plant germination（After bud）Or（iii）（i）With（ii）When, by the present invention's of herbicidally effective amount Synergistic herbicidal composition is applied to undesirable plant or growth place.It is preferred that also to before undesirable plant germination The undesirable plant (such as broad leaved weed, grassy weed, sedge or undesirable crop plants) of germination carries out Using, and it is unrelated with the growth period of the crop of sowing/plantation.

The compound (A) and compound (B) that the Synergistic herbicidal composition of the present invention includes herbicidally effective amount have collaboration Synergistic effect.It can be observed to act synergistically when common or when compound (A) and compound (B) almost is administered simultaneously；When in difference Time respectively apply compound (A) and compound (B) when, also observe that synergistic effect；It can also sequential application compound (A) and compound (B), such as before first bud apply then bud after apply or first early stage bud after apply, then mid-term or later stage bud After apply.It is preferably common herein or compound (A) and compound (B) is almost administered simultaneously, and be particularly preferably co-administered.

If the synergistic herbicidal compositions of the present invention are applied to soil surface before germination, entirely prevent weeds young Seedling germinates or weed growth is to cotyledon period, but then it just stops growing, and finally completely dead after two weeks to surrounding It dies.

If the Synergistic herbicidal composition to be applied to the green parts of plant after germination, growth can equally located Just drastically stop in the suitable short time after reason, and growth period when the ruderal plant is maintained at administration time point or its It is completely dead after certain time, it is relatively early in this way and constantly eliminate by the competing of the weeds generation that is harmful to crop plants It strives., also can be by Synergistic herbicidal composition application in water for rice, then it is inhaled by soil, bud and root It receives.

When compound (A) and compound (B) are co-administered, there are synergistic functions.Here, the Synergistic herbicidal The activity of composition is higher than the expection summation of each herbicidal activity of application.Synergistic function makes rate of application that can reduce, prevention Broad leaved weed, grassy weed and the sedge of more wide range, herbicide effect work faster, the duration it is longer, by only Application just has noxious plant preferably prevention and can widen using the phase once or several times.In the Synergistic herbicidal composition The dosage and compound (A) and the effective dose of compound (B) used is all adjustable to relatively low level, so that it is to soil Effect be reduced to minimum degree.This causes the Synergistic herbicidal composition of the present invention that can not only be applied to sensitive crop, also Almost avoid underground water pollution.Synergistic herbicidal composition of the present invention so that rate of application significantly decreases needed for active component.

The Synergistic herbicidal composition of the present invention can be by using technology well known to those skilled in the art with conventional side Formula is applied.Method of administration includes but not limited to, and is applied to undesirable plant or growth place, such as be applied to plant and close on Region and emergence before, emergence after, blade face（It disseminates, orient, is band-like, fixed point, machinery, jump or are educated at top formula again）And pass through Hand, knapsack, machinery, tractor or aerial（Aircraft, helicopter, unmanned plane）Method of administration is applied in water（Disseminate, pinpoint, Mechanically, water note formula, it is granular disseminate, granular fixed point, shaking flask or spray bottle）.

Desired purpose is depended in a well-known manner using type；The technology is it is ensured that this hair under any circumstance The best of active component in the bright Synergistic herbicidal composition possible is distributed.

The present invention also provides a kind of method for preventing undesirable plant growth, including the Herbicidal combinations of the present invention are existed It is applied in the presence of other reproductive parts of the plant of useful crop, the seed of useful crop or useful crop.

Plant mentioned in the present invention, crop include but not limited to, the seed of germination, emerging seedling, numerous from nutrition Grow plant, jejune plant and the plant grown up to of body germination.

It, can be by spraying apparatus directed spraying Herbicidal combination if active component cannot be well tolerable by certain crops Object so that they reach be grown in it is following when being not intended to the leaf of plant or exposed soil it is tactiosensible as few as possible Crops.

The method of the present invention is most preferably for undesirable plant or growth place prevention plant growth area or will be used to plant Weeds in the region of plant.When for plant growth area, amount of application should be enough to control weed growth but will not be to making Object generates serious permanent injury.

The rate of application of compound (A) can change, such as in 0.1g to 100g A.I./ha (hereinafter, in a wide range A.I./ha represents " active material/hectare "=reactive compound meter based on 100% purity), preferably 0.1-50g A.I./ha, More preferred 1-25g A.I./ha, more preferable 1-10 g A.I./ha.It is applied with the rate of application of 0.1 g to 100 g A.I./ha When, when prior to seeding, before plantation or before bud and after bud it is middle using compound (A) when, to be prevented have with relatively wide Evil plant spectrum, such as annual and perennial unifacial leaf or dicotyledonous broad-leaved section weeds, grassy weed and sedge, with And undesirable crop plants.

The rate of application of compound (B) can in a wide range change, such as 10g to 2000g A.I./ha, preferably 50-1500 g A.I./ha；It has preferable preventive effect to annual or perennial broadleaf section weeds.

The present invention also provides a kind of Synergistic herbicidal composition, active component is made of compound (A) and compound (B), Filler and/or surfactant.In the Synergistic herbicidal composition, the content of compound (A) and compound (B) accounts for described The 1%-90% of Synergistic herbicidal composition, preferably 5%-80%, more preferable 10%-80%, more preferable 15%-80%, more preferable 20%- 80%, more preferable 30%-80%, more preferable 40%-80%.

The Synergistic herbicidal composition of the present invention can be converted into conventional formulation, such as wettable powder, water-soluble granule, water Dissolubility liquor, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, microcapsule suspension-suspendinagent agent, water-dispersible grain Agent, ultra low volume liquids, tablet, low capacity dispersible granule, pill or dry suspending agent.

According to the present invention, term " filler ", which refers to, can be combined with active component or combines to make it easier for being administered to pair As（Such as plant, crop or careless class）Natural or synthetic organic or inorganic compound.Therefore, the filler is preferably lazy Property, it is acceptable at least to should be agricultural.The filler can be solid or liquid.

Applicable solid carrier is：Such as phyteral powdery type（Such as soy meal, starch, grain dust, wood powder, bark powder, Sawdust, walnut shell powder, wheat bran, cellulose powder, coconut husk, corncob and tobacco stem particle, extract residual after plant essence Slag etc.）, clay class（Such as kaolin, bentonite, acid china clay etc.）, talcum powder class.Silica（Such as diatomite, silica sand, cloud Female, aqueous silicic acid, calcium silicates）, activated carbon, natural mineral matter class（Float stone, attapulgite and zeolite etc.）, fire diatomite, sand, Plastics medium etc.（Such as polyethylene, polypropylene, polyvinylidene chloride etc.）, potassium chloride, calcium carbonate, calcium phosphate etc. inorganic mineral Chemical fertilizer, the clay fertilizer of property powder, ammonium sulfate, ammonium phosphate, urea, ammonium chloride etc., these substances can be used alone or 2 kinds It is above mixed.

Applicable liquid-carrier can select in llowing group of materials, such as water, alcohol type（Such as methanol, ethyl alcohol, isopropyl Alcohol, butanol, ethylene glycol etc.）, ketone（Such as acetone, methyl ethyl ketone, isobutyrone, cyclohexanone etc.）, ethers（Such as second Ether, dioxanes, methylcellulose, tetrahydrofuran etc.）, aliphatic hydrocarbon class（Such as kerosene, mineral oil etc.）, aromatic series Hydrocarbon（Such as benzene,toluene,xylene, solvent naphtha, alkylnaphthalene, chlorinated aromatic hydrocarbons, chlorinated aliphatic hydrocarbon, chlorobenzene etc.）, halogen Change hydrocarbon, amides, sulfone class, dimethyl sulfoxide (DMSO), mineral and vegetable oil, animal oil etc..

Applicable surfactant have the emulsifier with ion or non-ionic nature, dispersant or wetting agent or these The mixture of surfactant.The suitable of these surfactants has fatty alcohol polyoxyethylene ether, polyxyethylated aryl Ether, polyoxyethylene higher fatty acid esters, polyoxyethylene alcohol or the phosphate of phenol, the aliphatic ester of polyalcohol, alkylaryl sodium sulfonate, Naphthalene sulfonic acid polymer, lignosulfonates, the dendritic copolymer of macromolecule comb shape, butyl naphthalene sulfonate, alkylaryl sulfonates, The polyacrylates such as sodium alkylsulfosuccinates, grease, fatty alcohol and ethylene oxide condensate, alkyltaurate, protein Hydrolysate.Suitable oligosaccharide object or polymer, such as based on individual vinyl monomer, acrylic acid, polyoxyethylene or polyoxy third Alkene or its with for example（It is polynary）Alcohol or（It is polynary）The combination of amine.When in one kind in reactive compound and/or inert carrier One kind is not soluble in water and when applying in water, it is necessary to which there are surfactants.

If appropriate, Synergistic herbicidal composition of the invention is there may also be other addO-on therapies, such as protecting colloid, Adhesive, adhesive, thickener, thixotropic agent, bleeding agent, stabilizer, screening agent, sequestering agent, complex-forming agents.It is logical Often, the active component can be combined with any solid or liquid additive conventionally used for preparation purpose.

The Synergistic herbicidal composition of the present invention can will be in the active component and following substance by known way At least one mixed：Liquid-carrier or solid carrier, emulsifier, dispersant, wetting agent and/or protecting colloid, bonding Agent, adhesive, thickener, thixotropic agent, bleeding agent, stabilizer, screening agent, sequestering agent, complex-forming agents, water and its Its processing aid.

The Synergistic herbicidal composition of the present invention, which has, is more easy to the form used, because the amount of the component has been best Ratio.In addition, the auxiliary agent in preparation can be adjusted and be optimized each other.

Example of formulations

The form of compound A after tested includes：

Compound A acid

Compound A methyl esters

Compound A sylvite

1 3%+15% 2 first of compound A methyl esters of embodiment, the 4 different monooctyl ester oil-suspending agent of chlorine

Compound A methyl esters 3%

The different monooctyl ester 15% of 2 first, 4 chlorine

Naphthalene sulfonic acid-formaldehyde condensation product sodium salt 10%

Sorbitan aliphatic ester 5%

Bentonite 1%

Glycerine 5%

Corn oil complements to 100%

The each components such as active component, dispersant, wetting agent and water are uniformly mixed according to the ratio of formula, it is ground and/or high The oil-suspending agent of 3%+15% 2 first of compound A methyl esters, the 4 different monooctyl ester of chlorine is obtained after speed shearing.

2 3.5%+66.5% 2 first of Compound A potassium salt of embodiment, 4 chlorine sodium wettable powder

Compound A potassium salt 3.5%

2 first, 4 chlorine sodium 66.5%

Sodium butylnaphthalenesulfonate 10%

Polyoxyethylene lauryl ether carboxylic acid sodium 5%

White carbon 10%

Kaolin complements to 100%

By active component, various auxiliary agents and filler etc. by formula proportional components mix, after ultra-fine pulverizer disintegrating to get to The wettable powder of 3%+66.5% 2 first of Compound A potassium salt, 4 chlorine sodium.

3 0.8%+50% 2 first of compound A methyl esters of embodiment, 4 chlorine sodium wettable powder

Compound A methyl esters 0.8%

2 first, 4 chlorine sodium 50%

Glycerine fatty acid polyoxyethylene ether 1%

Sodium lignin sulfonate 2%

White carbon supply is to 100%

By active component, various auxiliary agents and filler etc. by formula proportional components mix, after ultra-fine pulverizer disintegrating to get to The wettable powder of 0.8%+50% 2 first of compound A methyl esters, 4 chlorine sodium.

4 0.4%+80% 2 first of Compound A potassium salt of embodiment, 4 chlorine sodium water dispersible granules

Compound A potassium salt 0.4%

2 first, 4 chlorine sodium 80%

To methoxyl group fatty acyl amido benzene sulfonate 6%

Lauryl sodium sulfate 5%

Ammonium sulfate 5%

Kaolin complements to 100%

Active component, dispersant, wetting agent, disintegrant and filler are uniformly mixed in the ratio of formula, by air-flow crushing into Wettable powder adds a certain amount of water mixing extruding and makes material.0.4% Compound A potassium salt+80% 2 is obtained after dry sieve The water dispersible granules of 4 chlorine sodium of first.

The different monooctyl ester missible oil of 5 0.5% compound A of embodiment acid 4 chlorine of+75% 2 first

Compound A acid 0.5%

The different monooctyl ester 75% of 2 first, 4 chlorine

Ethoxylated castor oil 5%

Calcium dodecyl benzene sulfonate 3%

SOLVESSOTM 200 complements to 100%

Mentioned component is proportionally prepared, is uniformly mixing to obtain uniform phase, obtains 0.5% compound A, 4 chlorine of sour+75% 2 first The missible oil of different monooctyl ester.

6 0.5%+25% 2 first of compound A methyl esters of embodiment, the 4 different monooctyl ester suspension emulsion of chlorine

Compound A methyl esters 0.5%

The different monooctyl ester 25% of 2 first, 4 chlorine

Methyl naphthalene sulfonate formaldehyde condensate 5%

Ethoxylated castor oil 3%

Bentonite 1%

SOLVESSO^TM 100 20%

Water complements to 100%

By compound A methyl esters, methyl naphthalene sulfonate formaldehyde condensate, water is ground and/or high speed shear after obtain compound A first Ester suspending agent；By the different monooctyl ester of 2 first, 4 chlorine, SOLVESSO^TM100th, ethoxylated castor oil is mixed evenly to obtain 2 first, 4 chlorine different Monooctyl ester missible oil；The obtained different monooctyl ester missible oil of 2 first, 4 chlorine is added in compound A methyl esters suspending agents, obtains 0.5% compound A first The suspension emulsion of 2 first of ester+25%, the 4 different monooctyl ester of chlorine.

7 10% compound A of embodiment acid 4 chlorine isopropyl acid wettable powders of+10% 2 first

Compound A acid 10%

2 first, 4 chlorine potassium 10%

Lauryl sodium sulfate 6%

Sodium metnylene bis-naphthalene sulfonate 3%

White carbon 20%

Kaolin complements to 100%

Said components are mixed in proportion, and grinds, crush, be prepared into the sour 4 chlorine isopropyl acids of+10% 2 first of 10% compound A can Wet powder.

8 5%+75% 2 first of Compound A potassium salt of embodiment, 4 chlorine isopropylamine water dispersible granules

Compound A potassium salt 5%

2 first, 4 chlorine isopropylamine 75%

MODIFIED LIGNOSULPHONATE 5%

Lauryl sodium sulfate 3%

Sodium chloride 1%

Kaolin complements to 100%

By Compound A potassium salt, 2 first, 4 chlorine isopropylamine active component, dispersant, wetting agent, disintegrant and filler in the ratio of formula It is uniformly mixed, by air-flow crushing into wettable powder；It adds a certain amount of water mixing extruding and makes material.After dry sieve To the water dispersible granules of 5%+75% 2 first of Compound A potassium salt, 4 chlorine isopropylamine.

9 10% compound A of embodiment acid 4 chlorine thioethyl ester aqueous emulsions of+50% 2 first

Oil phase：

Compound A acid 10%

2 first, 4 chlorine thioethyl ester 50%

Methyl oleate 10%

Ethoxylated castor oil 5%

Water phase：

The sodium salt 1% of naphthalene sulfonic acids-formaldehyde condensation products of sulfonation

Water complements to 100%

Compound A acid, 2 first, 4 chlorine thioethyl ester are dissolved in methyl oleate, ethoxylated castor oil is added in and obtains oil phase；It presses According to formula by the sodium salt of naphthalene sulfonic acids-formaldehyde condensation products of sulfonation, water is uniformly mixed and obtains water phase；Oil phase is added under stiring Enter water phase and obtain the aqueous emulsion of 10% compound A, 4 chlorine thioethyl esters of sour+50% 2 first.

10 5%+30%2 first of compound A methyl esters of embodiment, 4 chlorine sodium wettable powder

Compound A methyl esters 5%

2 first, 4 chlorine sodium 30%

Octylphenol polyethylene oxyethylene group ether sulfate 1%

NaLS 2%

The silicic acid 1% of high degree of dispersion

Sodium carbonate 10%

Kaolin complements to 100%

Said components are mixed in proportion, and grinds, crush, are prepared into the wettable of 5%+30%2 first of compound A methyl esters, 4 chlorine sodium Pulvis.

11 2%+40% 2 first of Compound A potassium salt of embodiment, 4 chlorine sodium coated granule

Compound A potassium salt 2%

2 first, 4 chlorine sodium 40%

Polyethylene glycol 3%

The silicic acid 1% of high degree of dispersion

Calcium carbonate complements to 100%

In a mixer, it by levigate active component even spread to the carrier soaked by polyethylene glycol, can obtain by this method Obtain the dust-free coated granules agent of 2%+40% 2 first of Compound A potassium salt, 4 chlorine sodium.

12 3%+47% 2 first of compound A methyl esters of embodiment, 4 chlorine sodium wettable powder

Compound A methyl esters 3%

2 first, 4 chlorine sodium 47%

Lauryl sodium sulfate 5%

Sodium lignin sulfonate 5%

Attapulgite complements to 100%

Said components are mixed in proportion, and grinds, crush, are prepared into the wettable of 3%+47% 2 first of compound A methyl esters, 4 chlorine sodium Pulvis.

4 chlorine sodium of+64%2 first of 13 8% Compound A potassium salt of embodiment squeezes out granule

Compound A potassium salt 8%

2 first, 4 chlorine sodium 64%

Sodium lignin sulfonate 4%

Carboxymethyl cellulose 2%

Kaolin complements to 100%

Active component is mixed and ground with auxiliary agent, mixture is soaked with water.The mixture is squeezed out, is then done in the air stream It is dry, obtain the extrusion granule of 4 chlorine sodium of+64%2 first of 8% Compound A potassium salt.

14 1.5%+60%2 first of compound A methyl esters of embodiment, 4 chlorine sodium microcapsule suspension-suspendinagent agent

Citric acid 0.05%

Catalyst 0.1%

2 first, 4 chlorine sodium 60%

PAPI 1.21%

Water 3%

SOLVESSO^TM 100 10%

Synperonic PE/64 5%

Dispersant LFH 0.55%

Antifoaming agent 0.1%

Urea 1.0%

Compound A methyl esters 1.5%

Water complements to 100%

By PAPI, compound A methyl esters, SOLVESSO^TM100 oil phases formed add in the water-soluble of the PE/64 containing Synperonic In liquid, emulsion is formed.Then it heats and keeps the temperature and catalyst reaction is added at 50 DEG C 2 hours.Compound A first is obtained after cooling The microcapsules of ester.

Synperonic PE/64, dispersant LFH, antifoaming agent, urea, 2 first, 4 chlorine sodium and water mix in proportion, And through being sanded, it is prepared into suspending agent.

Obtained compound A methyl esters microcapsules is added in the suspending agent of 2 first, 4 chlorine sodium, be uniformly mixing to obtain 1.5% chemical combination 4 chlorine sodium microcapsule suspension-suspendinagent agent of+60%2 first of object A methyl esters.

+ 30% Thistrol butyl ester suspended emulsion of 15 1% compound A methyl esters of embodiment

Compound A methyl esters 1%

Thistrol butyl ester 30%

SOLVESSO^TM 200 10%

Ethoxylated castor oil 4%

Fatty alcohol polyoxyethylene ether sulfosuccinic acid monoesters disodium 5%

MODIFIED LIGNOSULPHONATE 5%

Xanthans 1%

Bentonite 1%

Glycerine 5%

Water complements to 100%

Thistrol butyl ester is dissolved in SOLVESSO^TMIn 200, ethoxylated castor oil is added in, obtains Thistrol The missible oil of butyl ester.

By compound A methyl esters, fatty alcohol polyoxyethylene ether sulfosuccinic acid monoesters disodium, above-mentioned each component mixes in proportion Uniformly, and through being sanded, it is prepared into suspending agent.

The oil phase of the butyl ester containing Thistrol is added in the methyl esters suspending agents of A containing compound, obtains 1% compound A methyl esters The suspended emulsion of+30% Thistrol butyl ester.

16 2% compound A of embodiment acid 4 chloroethene thioesters missible oil of+30% 2 first

Compound A acid 2%

2 first, 4 chloroethene thioesters 30%

Ethoxylated castor oil 5%

Calcium dodecyl benzene sulfonate 3%

SOLVESSO^TM200 complement to 100%

Above-mentioned each component is mixed, is stirred to transparent homogeneous phase is obtained, obtains the breast of 2% compound A, 4 chloroethene thioesters of sour+30%2 first Oil.

17 5%+95% 2 first of compound A methyl esters of embodiment, 4 chlorine sodium

Compound A methyl esters 5%

2 first, 4 chlorine sodium 95%

Compound A methyl esters, 2 first, 4 chlorine sodium are proportionally uniformly mixed.

+ 5% isoxadifen of 18 2% 4 chlorine sodium of compound A+93% 2 first of methyl esters of embodiment

Compound A methyl esters 2%

2 first, 4 chlorine sodium 93%

Isoxadifen 5%

Compound A methyl esters, 2 first, 4 chlorine sodium, isoxadifen are proportionally uniformly mixed.

The different monooctyl ester of 19 4% compound A of embodiment acid 4 chlorine of+96% 2 first

Compound A acid 4%

The different monooctyl ester 96% of 2 first, 4 chlorine

Compound A acid, the different monooctyl ester of 2 first, 4 chlorine are proportionally uniformly mixed.

Different+10% oxabetrinil of monooctyl ester of 20 4% compound A of embodiment acid 4 chlorine of+86% 2 first

Compound A acid 4%

The different monooctyl ester 86% of 2 first, 4 chlorine

Oxabetrinil 10%

Compound A acid, the different monooctyl ester of 2 first, 4 chlorine, oxabetrinil are proportionally uniformly mixed.

21 0.5%+99.5% 2 first of Compound A potassium salt of embodiment, 4 chlorine sodium

Compound A potassium salt 0.5%

The different sodium 99.5% of 2 first, 4 chlorine

Compound A potassium salt, 2 first, 4 chlorine sodium are proportionally uniformly mixed.

+ 0.5% cloquintocetmexyl of 22 0.5% 4 chlorine sodium of+99% 2 first of Compound A potassium salt of embodiment

Compound A potassium salt 0.5%

2 first, 4 chlorine sodium 99%

Cloquintocetmexyl 0.5%

Compound A potassium salt, 2 first, 4 chlorine sodium, cloquintocetmexyl are proportionally uniformly mixed.

Above example proportioning is weight per distribution ratio.

Biological Examples

Post-emergence test

Using potting cauline leaf process method (NY/T 1155.4-2006)：It, will in the built-in quantitative soil of the polypots of high 6cm, diameter 9cm 15 ~ 20 sowings of seed of required test plants kind are placed in greenhouse after the fine earth of 0.5 ~ 1cm of lid thickness and train in polypots It supports, treats that weeds were grown to 1 ~ 2 leaf phase and carry out cauline leaf spraying treatment, per alms bowl spraying liquid 1mL, often processing is repeated 4 times, and set without medicament Processing for control.Processing is placed in the greenhouse in and cultivates, the growing state of routine observation target weeds, estimate after 21d target by Evil symptom and growth inhibition situation, and claim aerial part fresh weight or strain fresh weight, medicament is evaluated to target with target fresh weight inhibition rate The preventive effect of weeds.

Three kinds of reagents are prepared according to constant weight percentage：1st, compound A acid；2nd, compound A methyl esters；3 compound A Sylvite；4th, 2 first, 4 chlorine sodium；5th, the different monooctyl ester of 2 first, 4 chlorine；6th, 4 chlorine sodium of sour+2 first of compound A；7th, 4 chlorine sodium of+2 first of compound A methyl esters； 8th, 4 chlorine sodium of+2 first of compound A sylvite；9th, the different monooctyl ester of sour 4 chlorine of+2 first of compound A；10th, 4 chlorine of+2 first of compound A methyl esters is different pungent Ester；11st, the 4 different monooctyl ester of chlorine of+2 first of compound A sylvite；Above-mentioned each reagent is diluted with water later, obtains medicament dilution.

Investigation method：

Target damage symptoms and growth inhibition situation are estimated after test process 21d, and claims aerial part fresh weight, fresh weight is calculated and inhibits Rate (%).

Evaluation to the mixed synergistic effect for applying middle display of two or more herbicidal active components is to be based on “CalculationSynergistic and Antagonistic Response of Herbicide Combinations” What Colby ' the s methods described in (Weeds 15/1 (1967), S.R.Colby) determined.

In formula, X is to the fresh weight preventive effect of target weeds when compound A is applied alone with certain dosage；

Y is to the fresh weight preventive effect of target weeds when 2 first, 4 chlorine and its derivative are applied alone with certain dosage；

E₀To the theoretical value of target weeds fresh weight preventive effect during for two kinds of pharmacy mix of compound A and 2 first, 4 chlorine and its derivative；

To the measured value of target weeds fresh weight preventive effect when E is two kinds of pharmacy mix of compound A and 2 first, 4 chlorine and its derivative.

If the practical control of weeds rate (E) observed in biologic test is calculated more than using Colby ' s methods Desired value (the E arrived₀), then it represents that the effect of Herbicidal combinations is more than the summation of each agent effectiveness, it means that composition has Synergistic function.

The plant variety of test is as follows：

Common wheat（Triticum aestivum(spring)）；

Rice (Oryza sativa)；

Wild violet（Viola arvensis )；

Wild oat (Avena fatua L.)；

Firefly Lin（Schoenoplectus juncoides Roxb.)；

Difformed galingale herb（Cyperus difformis L.)

Experiment one：To the preventive effect of wild oat (Avena fatua L.)

The Synergistic herbicidal composition of the present invention（Compound A acid 4 chlorine sodium of+2 first or the different monooctyl ester of 2 first, 4 chlorine）To wild oat (Avena Fatua L.) preventive effect:

Table 1

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of compound A methyl esters or the different monooctyl ester of 2 first, 4 chlorine）To wild oat The preventive effect of (Avena fatua L.):

Table 2

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of compound A sylvite or the different monooctyl ester of 2 first, 4 chlorine）To wild oat The preventive effect of (Avena fatua L.):

Table 3

The result of the test of table 1, table 2 and table 3 is shown：Compound A and 2 first, 4 chlorine sodium or the different monooctyl ester of 2 first, 4 chlorine are 1:1-1:200 model In enclosing, apparent synergistic function is shown to the preventive effect of wild oat (Avena fatua L.).

Experiment two：To wild violet（Viola arvensis) preventive effect

The Synergistic herbicidal composition of the present invention（Compound A acid 4 chlorine sodium of+2 first or the different monooctyl ester of 2 first, 4 chlorine）To wild violet （Viola arvensis) preventive effect：

Table 4

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of compound A methyl esters or the different monooctyl ester of 2 first, 4 chlorine）To wild violet （Viola arvensis) preventive effect：

Table 5

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of Compound A potassium salt or the different monooctyl ester of 2 first, 4 chlorine）To wild violet （Viola arvensis) preventive effect：

Table 6

The result of the test of table 4, table 5 and table 6 is shown：Compound A and 2 first, 4 chlorine sodium or the different monooctyl ester of 2 first, 4 chlorine are 1:1-1:200 model In enclosing, to wild violet（Viola arvensis) preventive effect show apparent synergistic function.

Experiment three：To firefly Lin（Schoenoplectus juncoides Roxb.) preventive effect

The Synergistic herbicidal composition of the present invention（Compound A acid 4 chlorine sodium of+2 first or the different monooctyl ester of 2 first, 4 chlorine）To firefly Lin （Schoenoplectus juncoides Roxb.) preventive effect：

Table 7

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of compound A methyl esters or the different monooctyl ester of 2 first, 4 chlorine）To firefly Lin （Schoenoplectus juncoides Roxb.) preventive effect：

Table 8

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of compound A sylvite or the different monooctyl ester of 2 first, 4 chlorine）To firefly Lin （Schoenoplectus juncoides Roxb.) preventive effect：

Table 9

The result of the test of table 7, table 8 and table 9 is shown：Compound A and 2 first, 4 chlorine sodium or the different monooctyl ester of 2 first, 4 chlorine are 1:1-1:200 model In enclosing, to firefly Lin（Schoenoplectus juncoides Roxb.) preventive effect show apparent synergistic function.

Experiment four：To difformed galingale herb（Cyperus difformis L.) preventive effect

The Synergistic herbicidal composition of the present invention（Compound A acid 4 chlorine sodium of+2 first or the different monooctyl ester of 2 first, 4 chlorine）To difformed galingale herb （Cyperus difformis L.) preventive effect：

Table 10

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of compound A methyl esters or the different monooctyl ester of 2 first, 4 chlorine）To difformed galingale herb （Cyperus difformis L.) preventive effect：

Table 11

The Synergistic herbicidal composition of the present invention（4 chlorine sodium of+2 first of Compound A potassium salt or the different monooctyl ester of 2 first, 4 chlorine）To difformed galingale herb （Cyperus difformis L.) preventive effect：

Table 12

The result of the test of table 10, table 11 and table 12 is shown：Compound A and 2 first, 4 chlorine sodium or the different monooctyl ester of 2 first, 4 chlorine are 1:1-1:200 In the range of, to difformed galingale herb（Cyperus difformis L.) preventive effect show apparent synergistic function.

In addition, by common wheat（Triticum aestivum(spring)）With rice (Oryza sativa) Safety observations, the combination of the compounds of this invention A and 2 first, 4 chlorine and its derivative are resistant to by wheat and rice, and not generating can not connect The toxicity received.

Claims

1. a kind of Synergistic herbicidal composition, which is characterized in that active component is made of compound (A) and compound (B), wherein Compound (A) is the compound described by formula (I) or its agricultural salt or ester；Compound (B) is selected from 2 first, 4 chlorine and its derivative；

（I）

The weight ratio of the compound (A) and compound (B) is 1:1-1:200, preferably 1:5-1:150, further preferably 1:10-1: 100, more preferable 1:10-1:80, more preferable 1:10-1:60, more preferable 1:10-1:50.

2. Synergistic herbicidal composition according to claim 1, which is characterized in that the ester of the compound A is compound Methyl esters；The salt of the compound A is Compound A potassium salt.

3. Synergistic herbicidal composition according to claim 1, which is characterized in that compound B be selected from 2 first, 4 chlorine isopropyl acid, Thistrol, Thistrol butyl ester, the different monooctyl ester of 2 first, 4 chlorine, 2 first, 4 chloroethene thioesters, 2 first, 4 chlorine thioethyl ester, 2 first, 4 chlorine sodium Salt, 2 first, 4 chlorine sylvite, 2 first, 4 chlorine isopropyl amine salt.

4. Synergistic herbicidal composition according to claim 1, which is characterized in that compound B is selected from 2 first, 4 chlorine sodium salt, 2 The different monooctyl ester of 4 chlorine of first.

5. Synergistic herbicidal composition according to claim 1, which is characterized in that compound (A) and compound (B's) contains Amount accounts for 1%-90%, preferably 5%-80%, more preferable 10%-80%, the more preferable 15%-80% of the Synergistic herbicidal composition, more excellent Select 20%-80%, more preferable 30%-80%, more preferable 40%-80%.

6. Synergistic herbicidal composition according to claim 1, which is characterized in that further include filler and/or surface is lived Property agent.

7. Synergistic herbicidal composition according to claim 1, which is characterized in that dosage form is wettable powder, water solubility Granula, water-soluble liquor, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, microcapsule suspension-suspendinagent agent, water Dispersible granule, ultra low volume liquids, tablet, low capacity dispersible granule, pill or dry suspending agent.

8. Synergistic herbicidal composition described in claim 1 is in the purposes for preventing undesirable plant germination or growth.

9. Synergistic herbicidal composition described in claim 1 is preventing grassy weed, sedge weed, broad-leaved section weeds not Desired plant germination or the purposes of growth.

10. Synergistic herbicidal composition described in claim 1 is preventing big fringe amur foxtail (Alopecurusmyosuroides), wild violet（Viola arvensis), wild oat (Avena fatua L.), one Year raw Itanlian rye (Annual ryegrass), lamb's-quarters (Chenopodium album L.), chickweed (Stellaria media (L.) Cyr.), clearvers（Galium aparine L.), firefly Lin（Schoenoplectus juncoides Roxb.), it is different Type nutgrass flatsedge（Cyperus difformis L.) undesirable plant germination or growth purposes.

11. Synergistic herbicidal composition described in claim 1 is in prevention rice, wheat, barley, rye, rape, low erucic acid oil Broad-leaved section weeds, sedge weed, grassy weed are not intended in dish, beet, corn, turf, cotton, vegetables, sugarcane, soybean Plant germination or growth purposes.

A kind of 12. method for preventing undesirable plant, which is characterized in that including by Synergistic herbicidal described in claim 1 Composition is applied to undesirable plant or growth place to prevent the germination of undesirable plant or growth.

A kind of 13. method for preventing undesirable plant, which is characterized in that including：（i）Before undesirable plant germination （Before bud）;（ii）After undesirable plant germination（After bud）Or（iii）（i）With（ii）When, it will be described in claim 1 Synergistic herbicidal composition be applied to undesirable plant or growth place to prevent the germination of undesirable plant or life It is long.

A kind of 14. method for preventing undesirable plant, which is characterized in that including make undesirable plant or growth place with Synergistic herbicidal composition contact described in claim 1.

A kind of 15. method for preventing undesirable plant, which is characterized in that including by Synergistic herbicidal described in claim 1 Composition is applied in soil or water to prevent the germination of undesirable plant or growth.

A kind of 16. method for preventing undesirable plant, which is characterized in that including by Synergistic herbicidal described in claim 1 Compound (A) and compound (B) in composition collectively or individually be applied to undesirable plant or growth place to prevent Control the germination or growth of undesirable plant.

A kind of 17. method for preventing undesirable plant, which is characterized in that including by Synergistic herbicidal described in claim 1 Compound (A) and compound (B) in composition collectively or individually are applied in soil or water to prevent undesirable plant Germination or growth.

A kind of 18. method for preventing undesirable plant, which is characterized in that including by Synergistic herbicidal described in claim 1 Composition is applied in the presence of other reproductive parts of the plant of useful crop, the seed of useful crop or useful crop.

A kind of 19. method for preventing undesirable plant, which is characterized in that including by Synergistic herbicidal described in claim 1 Composition is added in irrigation water, and undesirable plant is administered to by using ground or aerial dusters, sprayer, grain scattering machine Or growth place.