CN106857601A - Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops - Google Patents

Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops Download PDF

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Publication number
CN106857601A
CN106857601A CN201710119917.7A CN201710119917A CN106857601A CN 106857601 A CN106857601 A CN 106857601A CN 201710119917 A CN201710119917 A CN 201710119917A CN 106857601 A CN106857601 A CN 106857601A
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isoproturon
wheat
herbicidal combinations
metamifops
metamifop
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龚国斌
陈克付
程小虎
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Anhui Fengle Agrochemical Co Ltd
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Anhui Fengle Agrochemical Co Ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/74—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,3
    • A01N43/76—1,3-Oxazoles; Hydrogenated 1,3-oxazoles

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The present invention provides Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops, and the active ingredient of the Herbicidal combinations is made up of metamifop and isoproturon, and the weight ratio of Suo Shu metamifops and isoproturon is 2 20：20‑90.Herbicidal combinations of the present invention can prevent and kill off wheat, rice terrace annual gramineous weed and can prevent and kill off broad leaved weed again, herbicidal effect significantly, has significant synergies, and a dispenser can prevent and kill off the weeds in crop whole breeding time, it is a kind of preferable herbicide on succession crop without influence.

Description

Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops
Technical field
The present invention relates to pesticide herbicide technical field, and in particular to after a kind of wheat, the rice seedlings of Han metamifops Herbicidal combinations.
Technical background
Wheat and paddy rice are the important cereal crops of China, and in 2014, wheat cultivation area was 24,000,000 hectares, paddy rice Cultivated area is in hundred million mu or so of 4.3-4.4.Either wheat paddock, or paddy field weed species is all a lot.Current wheat paddock goes out Existing a large amount of resistant weeds such as amur foxtail, annual bluegrass, wild oat, rye grass, Descurainia sophia, clearvers, shepherd's purse, chickweed, field thistle, mother-in-law Procumbent speedwell etc., general medicament is difficult to eradicate.It is general based on the medicament single dose use such as fenoxapropPethyl on Vehicles Collected from Market, it is main anti- Except wheat paddock monocotyledon weed.And prevent and kill off broad leaved weed and rely primarily on some high residue medicaments, it influences larger to second stubble crop, It is not friendly enough to environment.
National rice terrace there are about the kind of weeds more than 200, wherein common generation is universal, endanger serious main weeds there are about 40 Kind, occur with barnyard grass in main weeds and hazard area be maximum, be secondly difformed galingale herb, Monochoria vaginalis, flat stalk Fischer grass, moleplant seed, Bog pondweed.At present, rice herbicide kind is more, is broadly divided into herbicide before seedling stage and the class of herbicide after seedling two.Wherein before seedling is removed Careless agent is based on pretilachlor, butachlor.Herbicide after seedling based on cyhalofop-butyl, penoxsuam etc., but it is relatively costly, and And weeds easily produce resistance higher.
The content of the invention
Grassy weed can be prevented and kill off it is an object of the invention to provide one kind, broad leaved weed can be prevented and kill off again, and can be simultaneously For wheat, the herbicidal composition of rice terrace postemergence weed control, and to when the complex weedicide of stubble and succession crop safety.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops, the active ingredient of the Herbicidal combinations by Metamifop and isoproturon are constituted, and the weight ratio of Suo Shu metamifops and isoproturon is 2-20：20-90.
The weight ratio of further scheme, Suo Shu metamifops and isoproturon is 4-12：40-80.
The weight ratio of further scheme, Suo Shu metamifops and isoproturon is 6-8：60-80.
Further scheme, the weight of the active ingredient accounts for the 0.1~90% of the Herbicidal combinations gross mass.
Further scheme, the formulation of the Herbicidal combinations is suspending agent, suspension emulsion, missible oil, microemulsion, aqueous emulsion, can WP or water dispersible granules.
The synergy after mixture is evaluated with the co-toxicity coefficient method of Sun Yunpei, knot fruit is aobvious to show metamifop, isoproturon two Plant active component and press 4-8：The co-toxicity coefficient of 80-60 ratios compounding is significantly greater than 120, reaches notable synergistic effect, Shuos Ming oxazoles Acyl grass amine, two kinds of active components of isoproturon have significant synergies to annual single broadleaf weed.
To wheat field control effectiveness test：Field control effectiveness test by 2 years shows, in wheat tillering stage (November before surviving the winter The middle ten days) or the beginning of spring after period of seedling establishment, the leaf of weeds 2~5 do not wait the phase, and by range estimation, wheat has no symptom of chemical damage from dispenser to maturity period, To wheat safety.Preventive effect to grassy weed reaches more than 90%, reaches more than 91.5% to the preventive effect of broad leaved weed, and with The increase of dosage, preventive effect is remarkably reinforced.Compare with one of which active ingredient is used alone, herbicide controlling spectrum is expanded, to standing grain Undergraduate course weeds, broad leaved weed are respectively provided with obvious synergistic effect.Dispenser can control the weeds in crop whole growth period, Not only herbicidal effect is notable, and environmentally friendly, on second stubble crop without influence, to people, animal, birds and beneficial organism safety, Be conducive to keeping ecological balance.
Compared with prior art, Herbicidal combinations of the present invention can prevent and kill off grassy weed, and it is miscellaneous to prevent and kill off broad-leaved again Grass, to wheat and wheat safety, and on succession crop without influence, has a good application prospect.
Specific embodiment
The invention discloses a kind of containing metamifop, the wheat of isoproturon two kinds of active components, wheat postemergence weed control group Compound, those skilled in the art can use for reference present disclosure, be suitably modified technological parameter realization.In particular, institute There is similar replacement and change apparent to those skilled in the art, they are considered as being included in the present invention. Product of the invention and application are described by preferred embodiment, and related personnel can be not substantially being departed from the present invention Hold, method described herein and application be modified in spirit and scope or suitably change is realized and using originally with combine Inventive technique.
With reference to embodiment, the present invention is expanded on further：
Embodiment 1：44% metamifop isoproturon dispersibles oil-suspending agent (metamifops：Isoproturon=4：40)
Take 4kg metamifops, 40kg isoproturons, 8kg dispersant block polyether nonionic surfactants (Pluronic125), 5kg wetting agents propane diols, 0.5kg disintegrant xanthans, 1kg binding agent methylated vegetable oils, carrier is planted Thing oil 41.5kg.By being sufficiently mixed allotment, ball mill grinding, adjusting, be packaged to be and dispersible oil-suspending agent.
Embodiment 2：24% metamifop isoproturon suspending agent (metamifops：Isoproturon=1：7)
Take 3kg metamifops, 21kg isoproturons, 8kg sodium lignin sulfonates (dispersant), 5kg aliphatic alcohol polyethenoxies Ether (wetting agent), 1kg xanthans (thickener), 2kg polyoxyethylene polyoxy propyl alcohol amidogen ether (defoamer), 5kg ethylene glycol is (antifreeze Agent), carrier water 55kg.By being sufficiently mixed allotment, ball mill grinding, adjusting, be packaged to be suspending agent.
Embodiment 3：66% metamifop isoproturon water dispersible granules (metamifops：Isoproturon=1：10)
Take 6kg metamifops, 60kg isoproturons, 7kg dispersants-naphthalenesulfonate formaldehyde condensation compound (D-425), 5kg profits The mixture (EFW) of humectant-alkylnaphthalene sulfonate and anion wetting agent, 5kg disintegrants-ammonium sulfate, 2kg binding agents-poly- Vinyl alcohol (PVA), carrier kaolin 15kg.Be adequately mixed, air-flow crushing, mixing, granulation, drying and screening obtain moisture dissipate Granula.
Embodiment 4：68% metamifop isoproturon water dispersible granules (metamifops：Isoproturon=8：60)
Take 8kg metamifops, 60kg isoproturons, 7kg dispersants-naphthalenesulfonate formaldehyde condensation compound (D-425), 5kg profits The mixture (EFW) of humectant-alkylnaphthalene sulfonate and anion wetting agent, 5kg disintegrants-ammonium sulfate, 2kg binding agents-poly- Vinyl alcohol (PVA), carrier kaolin 13kg.Be adequately mixed, air-flow crushing, mixing, granulation, drying and screening obtain moisture dissipate Granula.
Embodiment 5：84% metamifop isoproturon wettable powder (metamifops：Isoproturon=4:80)
Take 4kg metamifops, 80kg isoproturons, 4kg dispersants NNO, 3kg wetting agent K12,4kg White Carbon black, lightweight carbon Sour calcium complements to 100kg.Be adequately mixed, air-flow crushing, mixing, obtain wettable powder.
Embodiment 6：90% metamifop isoproturon WG (metamifops：Isoproturon=10：80)
Take 10kg metamifops, 80kg isoproturons, 3.5kg dispersants-naphthalenesulfonate formaldehyde condensation compound (D-425), The mixture (EFW) of 2.5kg wetting agents-alkylnaphthalene sulfonate and anion wetting agent, 2.5kg disintegrants-ammonium sulfate, 1kg Binding agent-polyvinyl alcohol (PVA), carrier kaolin complements to 100kg.Be adequately mixed, it is air-flow crushing, mixing, granulation, dry Dry and screening obtains water dispersible granules.
Embodiment 7：Metamifop, the report of isoproturon cauline leaf process synergy toxicity determination test
Under greenhouse experiment, using pot-culture method, Yan Jiu metamifops, the weeding effect of isoproturon binary built Really, and with the co-toxicity coefficient method of Sun Yunpei evaluate the two different proportion it is mixed after synergy type, be metamifop, different Third grand rational mixture provides scientific basis.
For studying thing wheat breed：Anhui wheat 33
For examination weeds amur foxtail (Alopecurus aequalis), Wang grass (Beckmannia syzigachne (Steud.) Fernald), clearvers (Galium aparine L.), shepherd's purse (Capsella bursa-pastoris), (on Field harvests seed within 1 year, and germination percentage is more than 85%).
The metamifop active compound (JiangSu LianHua Science Co., Ltd) of reagent agent 96%；98% isoproturon active compound (Anhui Guangxin agrochemical limited company).
Weigh quantitative active compound with electronic balance, add appropriate emulsifying agent, with acetone solution, finally with 0.1% soil Above-mentioned active compound is diluted to required concentration by warm 80 aqueous solution.
The synergy of metamifop and isoproturon
Metamifop, isoproturon single dose and 5 Ge metamifops and isoproturon mixture preparation are set into 5 dosage respectively, Blank separately is set, each test process is repeated 4 times.Treatment agent dosage refers to table 1.
The test process of table 1 and test level (consumption g a.i./667 ㎡)
In the leaf phase of wheat 3, weeds 2-4 leaf phase cauline leaf spraying treatments.Test was carried out at reagent spray on March 5th, 2015 Reason, dispenser 1 time.The damage symptoms of record wheat and weeds, 20d after medicine in detail after dispenser, carry out fresh weight measurement, and with compare place Reason compares, and calculates fresh weight preventive effect.
Synergy type of the result of the test with the co-toxicity coefficient method evaluation of Sun Yunpei after mixed.According to SUN, Y-P (Sun Yun It is abundant) method calculates its actual toxicity index, mixture theoretical toxicity index, co-toxicity coefficient.With log concentration as X, pest and disease damage preventive effect machine Rate value is Y, seeks regression equation.
Actual toxicity index=standard agent LD50The LD of/mixture50×100
Theoretical toxicity index=∑ the percentage of the medicament active ingredient (toxicity index of reagent agent × in mixture)
Actual toxicity index/theoretical toxicity index × 100 of co-toxicity coefficient=mixture
With isoproturon as standard agent in experiment.
Criterion：Co-toxicity coefficient<80 is antagonism, is summation action between 80-120,>120 make for synergy With.
Isoproturon is as shown in table 3 below with the synergy of atrazine：
The metamifop of table 2 and isoproturon mixture, fresh weight preventive effects of the 20d to weeds after medicine
Prevention effect is four average values of data in table.
As shown in Table 3：Toxic action situation and preventive effect of the medicament to weeds.Its respective toxicity regression is calculated by formula Equation, LD50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.It is listed in table 4.
Table 3：Metamifop and synergy of the isoproturon mixture to weeds
Treatment Regression equation Coefficient correlation Actual toxicity index Theoretical toxicity index Coefficient of synergism
A Y=1.2455x+3.9011 0.9902 7.6265 354.08 / /
B Y=1.9418x+2.2204 0.9941 27.0041 100 / /
C Y=1.9343x+2.4907 0.9962 19.8293 136.18 112.1 121.48
D Y=1.9482x+2.5864 0.9914 17.3341 155.79 123.82 125.82
E Y=2.0138x+2.6208 0.9866 15.1858 177.82 129.90 136.89
F Y=1.9271x+2.6415 0.9902 16.7430 161.29 142.34 114.11
G Y=1.9451x+2.5995 0.9908 17.1457 157.50 158.63 99.29
From experiment, the co-toxicity coefficient for processing C, D, E, F, G is respectively：121.48、125.82、136.89、114.11、 99.29, co-toxicity coefficient is all higher than 80, with addition or synergistic effect, wherein the co-toxicity coefficient for the treatment of C, D, E is more than 120, has Synergistic effect, the co-toxicity coefficient for particularly processing E is 136.89 to the maximum, with notable synergistic effect.
5.1.3 conclusion (of pressure testing)
Understand that , metamifops press 4-8 with isoproturon by experiment：80-60 ratio mixtures are more suitable, to annual list Broadleaf weed has significant synergies.
Embodiment 8：Security indoor measurement test report of the metamifop isoproturon cauline leaf process to wheat
Under greenhouse experiment, using pot-culture method, Yan Jiu metamifops, isoproturon binary built cauline leaf process pair The security , of wheat is metamifop, the rational mixture of isoproturon provides scientific basis.
For studying thing wheat breed：Anhui wheat 33
For examination weeds amur foxtail (Alopecurus aequalis), Wang grass (Beckmannia syzigachne (Steud) Fernald), ox chickweed (Malachium aquaticum (L.) Fries), shepherd's purse (Capsella bursa-pastoris) (field harvesting upper one year seed, germination percentage is more than 85%).
The metamifop active compound (JiangSu LianHua Science Co., Ltd) of reagent agent 96%；98% isoproturon active compound (Anhui Guangxin agrochemical limited company).
Weigh quantitative active compound with electronic balance, add appropriate emulsifying agent, with acetone solution, finally with 0.1% soil Above-mentioned active compound is diluted to required concentration by warm 80 aqueous solution.
In the leaf phase of wheat 3, the dispenser of weeds 2-4 leaf phase cauline leaf spraying treatments 1 time.After dispenser, investigate each treatment wheat whether there is Symptom of chemical damage, records symptom of chemical damage, grade in detail if having, and 20 days after medicine, measures each treatment wheat fresh weight, calculates fresh weight and suppresses Rate, with clear and definite test medicine to the security of wheat.After dispenser simultaneously in detail record weeds damage symptoms (such as growth inhibition, Chlorosis, deformity etc.), in 20 days after medicine, each treatment weeds aerial part fresh weight is weighed, calculate the fresh weight preventive effect of weeds.
Regression analysis is carried out to the logarithm value of drug dose and the niqueMin of wheat fresh weight inhibition with DPS softwares, is calculated Dosage ED when coefficient correlation and suppression crop 10%10, and suppress weeds 90%ED90, obtain selectivity index.
Selectivity index=ED10/ED90
Observe within 5 days after dispenser, the high concentration 8000mg/ of the 84% metamifop isoproturon WP prepared with embodiment 5 Kg (4 times of recommended dose high dose) process part wheat lobus cardiacus albefaction, plant height is normal, recommended dose and its again amount treatment wheat Growing way is normal, is not distinguished significantly with blank treatment.
The activity of weeding of table 4 and crop safety ocular estimate evaluation criterion
Inhibitory action of the metamifop isoproturon WP of table 5 84% to wheat
Fresh weight preventive effects of the metamifop isoproturon WP of table 6 84% to weeds
As shown in Table 6：The medicament calculates its each toxicity regression to the toxic action situation and preventive effect of weeds by formula Equation, LD50, it is listed in table 10.
Table 7：Virulence regression equation and LD50
Treatment Regression equation Coefficient correlation 95% confidential interval
A Y=-1.9636+2.6862x 0.9965 391.1625 355.5168-430.3822
As shown in Table 7：The LD of 80% metamifop isoproturon WP50For：391.1625,95% confidential interval is 355.5168-430.3822。
By table 5, table 6, can be in the hope of the ED of suppression wheat growth 10% by DPS softwares10=4846.2663, suppress miscellaneous The ED of grass growth 90%90=1173.3963, selectivity factor=4846.2663/1173.3963=4.13>2, it is believed that the medicament With obvious selectivity, to wheat safety.
Embodiment 9：Security indoor measurement test report of the metamifop isoproturon cauline leaf process to paddy rice
Under greenhouse experiment, using pot-culture method, Yan Jiu metamifops, isoproturon binary built cauline leaf process pair The security , of paddy rice is metamifop, the rational mixture of isoproturon provides scientific basis.
For studying thing rice varieties：Peaceful round-grained rice 3.
For examination weed moleplant seed (Leptochloachinensis (L.) Nees), barnyard grass (Echinochloa Crusgalli (L.) Beauv.), Monochoria vaginalis (Monochoria vaginalis (Burm.f.) Presl), short arrowhead (Sagittaria pygmaea Miq), difformed galingale herb (Cyperus difformis L.).(field harvesting upper one year seed, Germination percentage is more than 85%).
The metamifop active compound (JiangSu LianHua Science Co., Ltd) of reagent agent 96%；98% isoproturon active compound (Anhui Guangxin agrochemical limited company).
Weigh quantitative active compound with electronic balance, add appropriate emulsifying agent, with acetone solution, finally with 0.1% soil Above-mentioned active compound is diluted to required concentration by warm 80 aqueous solution.
In rice plant of tillering stage, the dispenser of weeds 2-5 leaf phase cauline leaf spraying treatments 1 time.After dispenser, investigating each treatment paddy rice has Without symptom of chemical damage, symptom of chemical damage, grade are recorded in detail if having, 20 days after medicine, measure each treatment paddy rice fresh weight, calculate fresh weight suppression Rate processed, with clear and definite test medicine to the security of paddy rice.The damage symptoms of record weeds in detail (press down as grown simultaneously after dispenser System, chlorosis, deformity etc.), in 20 days after medicine, each treatment weeds aerial part fresh weight is weighed, calculate the fresh weight preventive effect of weeds.
Regression analysis is carried out to the logarithm value of drug dose and the niqueMin of paddy rice fresh weight inhibition with DPS softwares, is calculated Dosage ED when coefficient correlation and suppression crop 10%10, and dosage ED during suppression weeds 90%90, obtain selectivity index.
Selectivity index=ED10/ED90
Observe within 5 days after dispenser, the high concentration of the 66% metamifop isoproturon water dispersible granules prepared with embodiment 3 4800mg/kg (4 times of recommended dose high dose) process part rice leaf slightly turns to be yellow, and plant height is normal, recommended dose and its Amount treatment paddy rice growing way is normal again, is not distinguished significantly with blank treatment.
The activity of weeding of table 8 and crop safety ocular estimate evaluation criterion
Inhibitory action of the metamifop isoproturon water dispersible granules of table 9 66% to paddy rice
Fresh weight preventive effect of the metamifop isoproturon water dispersible granules of table 10 66% to weeds
As shown in Table 10：The medicament calculates its each toxicity regression to the toxic action situation and preventive effect of weeds by formula Equation, LD50, it is listed in table 10.
Table 11：Virulence regression equation and LD50
Treatment Regression equation Coefficient correlation 95% confidential interval
A Y=-1.4002+2.6456x 0.9920 262.5193 227.7044-302.6572
As shown in Table 14：The LD of 66% metamifop isoproturon water dispersible granules50For：262.5193,95% confidence Interval is 227.7044-302.6572.
By table 9, table 10, can be in the hope of the ED of suppression paddy growth 10% by DPS softwares10=4412.1520, suppress miscellaneous The ED of grass growth 90%90=800.8724, selectivity factor=4412.1520/800.8724=5.51>2, it is believed that the medicament has There is obvious selectivity, to rice safety.
Embodiment 10：Complex weedicide of the present invention is in wheat field control effectiveness test
Complex weedicide of the present invention shown by the field control effectiveness test of 2 years, in wheat tillering stage (November before surviving the winter The middle ten days) or the beginning of spring after period of seedling establishment, the leaf of weeds 2~5 not wait the phase, using embodiments of the invention 3 prepare 66% oxazole acyl grass Milliliter/mu of dosage 200,250,300,500 of amine isoproturon water dispersible granules, is watered 40 kgs/acre and sprays, 3 after medicine, 7, 10th, to the maturity period, range estimation Safe to wheat surveys all preventive effects in 20,40 days, as a result such as following table within 20,30,40 days：
Preventive effect of the metamifop isoproturon water dispersible granules of table 12 66% to weeds
Note：Data are strain number in blank control group in table, and other each processing datas are preventive effect (%)
By range estimation, wheat has no symptom of chemical damage from dispenser to maturity period, to wheat safety.Grassy weed is prevented Effect：Reach more than 78.8% within 20 days after 200 milliliter/mu medicines, reach more than 95.2% within 40 days after medicine；To the preventive effect of broad leaved weed： Reach more than 77.5% within 20 days after medicine, reach more than 91.5% within 40 days after medicine, with the increase of dosage, preventive effect is remarkably reinforced, Good herbicidal effect is can reach in milliliter/mu of wheat paddock 250.Compare with one of which active ingredient is used alone, expand Herbicide controlling spectrum, to grassy weed, broad leaved weed is respectively provided with obvious synergistic effect.Dispenser can control crop entirely to give birth to Weeds in long-term, not only herbicidal effect is significantly, and environmentally friendly, on second stubble crop without influence, to people, animal, birds and Beneficial organism safety, is conducive to keeping ecological balance.In addition, herbicide of the invention is processed using physical method, production technology Simply, three-waste free discharge in production process, has no adverse effects to ecological environment.It is that current prevention effect preferably compounds weeding Agent.
Embodiment 11：Field control effectiveness test of the complex weedicide of the present invention in rice terrace
Complex weedicide of the present invention was shown by the field control effectiveness test of 2 years, in the leaf phase of paddy rice 3~5, weeds 3~5 Leaf phase, 68% metamifop isoproturon WG (8% metamifops+60% prepared using embodiments of the invention 4 Isoproturon) 80,100,120,200 grams/acre of dosage, be watered 40 kgs/acre and spray, 3,7,10,20,30 days and ripe after medicine Phase, Security of rice is estimated, strain preventive effect is surveyed within 10,30 days after medicine, as a result such as following table：
The metamifop isoproturon WG of table 13 68% (isoproturon of 8% metamifop+60%) is to the preventive effect of weeds
Note：Data are strain number in blank control group in table, and other each processing datas are preventive effect (%)
By range estimation, paddy rice has no symptom of chemical damage from dispenser to maturity period, to rice safety.80 grams/acre of the preventive effect of weeds 10 days preventive effects to grassy weed reach more than 90.0%, and the preventive effect of broad leaved weed reaches 88.2%, and 30 days miscellaneous to grass family The preventive effect of grass reaches more than 93.6%, and the preventive effect of broad leaved weed reaches more than 92.4%, and with the increase of dosage, preventive effect is obvious Enhancing.In rice terrace, 100 grams/acre can reach good herbicidal effect, compare with one of which active ingredient is used alone, and expand Big herbicide controlling spectrum, has obvious synergistic effect to grassy weed, broad leaved weed.Dispenser can control crop entirely to give birth to Weeds in long-term, not only herbicidal effect is significantly, and environmentally friendly, on second stubble crop without influence, to people, animal, birds and Beneficial organism safety, is conducive to keeping ecological balance.In addition, herbicide of the invention is processed using physical method, production technology Simply, three-waste free discharge in production process, has no adverse effects to ecological environment.It is that current prevention effect preferably compounds weeding Agent.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (5)

1. Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops, it is characterised in that：The work of the Herbicidal combinations Sexual element is made up of metamifop and isoproturon, and the weight ratio of Suo Shu metamifops and isoproturon is 2-20：20-90.
2. Herbicidal combinations after wheat according to claim 1, rice seedlings, it is characterised in that：Suo Shu metamifops and The weight ratio of isoproturon is 4-12：40-80.
3. Herbicidal combinations after wheat according to claim 1, rice seedlings, it is characterised in that：Suo Shu metamifops and The weight ratio of isoproturon is 6-8：60-80.
4. Herbicidal combinations after wheat according to claim 1 and 2, rice seedlings, it is characterised in that：The active ingredient Weight accounts for the 0.1~90% of the Herbicidal combinations gross mass.
5. Herbicidal combinations after wheat according to claim 1, rice seedlings, it is characterised in that：The Herbicidal combinations Formulation is suspending agent, suspension emulsion, missible oil, microemulsion, aqueous emulsion, wettable powder or water dispersible granules.
CN201710119917.7A 2017-03-01 2017-03-01 Herbicidal combinations after a kind of wheat, the rice seedlings of Han metamifops Pending CN106857601A (en)

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CN111972066A (en) * 2020-08-31 2020-11-24 江苏富田农化有限公司 Method and device for preventing and removing gramineous weeds in winter wheat field

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CN1458822A (en) * 2000-09-18 2003-11-26 拜尔作物科学股份有限公司 New herbicidial compositions
CN102919257A (en) * 2012-11-14 2013-02-13 安徽丰乐农化有限责任公司 Weeding water dispersible granule
CN103719128A (en) * 2013-12-26 2014-04-16 海利尔药业集团股份有限公司 Weed killing composition containing metamifop and mesosulfuron

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US5518991A (en) * 1991-05-18 1996-05-21 Hoechst Aktiengesellschaft Suspoemulsions based on fenoxaprop-ethyl
CN1458822A (en) * 2000-09-18 2003-11-26 拜尔作物科学股份有限公司 New herbicidial compositions
CN102919257A (en) * 2012-11-14 2013-02-13 安徽丰乐农化有限责任公司 Weeding water dispersible granule
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CN111972066A (en) * 2020-08-31 2020-11-24 江苏富田农化有限公司 Method and device for preventing and removing gramineous weeds in winter wheat field

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