CN105076162A - Paddy field weeding composition containing oxyfluorfen and pyraclonil - Google Patents
Paddy field weeding composition containing oxyfluorfen and pyraclonil Download PDFInfo
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- CN105076162A CN105076162A CN201510475936.4A CN201510475936A CN105076162A CN 105076162 A CN105076162 A CN 105076162A CN 201510475936 A CN201510475936 A CN 201510475936A CN 105076162 A CN105076162 A CN 105076162A
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Abstract
The invention discloses a paddy field weeding composition containing oxyfluorfen and pyraclonil, and relates to the technical field of agricultural weeding. The paddy field weeding composition comprises an effective quantity of active components, auxiliaries and excipient. The active components include the oxyfluorfen and the pyraclonil. Compared with single dosage, the paddy field weeding composition prolongs the pesticide application suitable period and widens the functional spectrum; an excellent prevention and killing effect is achieved on paddy field swart weeds such as barnyard grass, moleplant seeds and sagittaria pygmaea which cannot be prevented and killed easily; annual broadleaf weeds, sedge weeds, grassy weeds and certain perennial weeds can be killed at the same time. Besides, the lasting period is long, safety can be achieved by paddies and next-stubble crops, and thus the paddy field weeding composition is an ideal paddy field weed killer.
Description
Technical field:
The present invention relates to agriculture weeding technique field, be specifically related to a kind of Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil.
Background technology:
Paddy rice is one of China's staple food crop, no matter cultivated area and output, all ranks first in China cereal crops.The rice field of all rice workspaces of China, always has a large amount of weeds to occur.According to statistics, the weeds that national rice field can form harm have more than 200 to plant, wherein the most common, occur general, endanger and serious have more than 40 to plant.Rice cropping mode is various comprises transplanting, rice transplanting and live, and make that rice weed kind constantly increases, the emergence period elongates, harm increases the weight of.
In recent years, a kind of weed control mode of simple prolonged application (agricultural or chemistry), the Weeds distribution easily prevented and kill off down, and some weeds rambunctious grows up very soon, define the unmanageable malignant weed of paddy field.In addition, some weed killer herbicide kind large area are used alone, and also cause a lot of weeds to develop immunity to drugs, and control efficiency is difficult to ensure.Along with rice cropping mode, cropping system constantly change, herbicide resistance problem is increasingly severe, and the weed killer herbicide that development of new prevents and kill off paddy field weed is the main method of current paddy field weeding, is also the key guaranteeing that Rice Production gets an abundant harvest.
Oxyfluorfen is the fluorine-containing benzene ether-derivative herbicides developed by Rhom and Hass of the U.S., being a kind of contact killing type weed killer herbicide, playing herbicide effect when there being light.Enter in plant corpus mainly through plumule, mesocotyl, less through root absorption, there is denier upwards to be transported by root and enter leaf portion.Getting up early application effect is best before bud and after bud, comparatively wide to the weeds herbicidal spectrum of seed germination, can prevent and kill off broad leaved weed, nutgrass flatsedge and barnyard grass, but only have inhibitory action to perennial weed.
The novel structure compound with Pyrazolopyridine ring that Beyer Co., Ltd of pyraclonil system finds, applied for a patent (WO9408999) on October 12nd, 1992.It has very high activity to needle spikesedge herb and simultaneous annual sedge weed and grassy weed.The mechanism of action is the inhibitor of proporphyrinogen oxidase.Can be used for rice field and prevent and kill off annual gramineous weed, sedge weed and broad leaved weed and some perennial weeds.Pyraclonil to people and animals and fish and shellfish fool proof, steam forces down, and in paddy field soil, the half life period is 6d, therefore little to carrying capacity of environment.
Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.Being screened by formulation of pesticide, can effectively improve actual control efficiency, reduce dosage, reduce costs, delay the drug-fast generation of pest, is the important means that agricultural synthesis is administered.
Because Oxyfluorfen biases toward broad leaved weed in weed control, slightly poor to grassy weed preventive effects such as high leaf age barnyard grasses, and the field lasting period is slightly short compared with broad leaved weed.Especially needle spikesedge herb has produced stronger resistance to Oxyfluorfen, causes some regional needle spikesedge herbs at present to rise to advantage group at paddy field, needs repeatedly medication to remove.Pyraclonil has very high activity to needle spikesedge herb and simultaneous annual sedge weed and grassy weed.So, the recipe determination of the present inventor to Oxyfluorfen and pyraclonil conducts in-depth research, find that Oxyfluorfen and pyraclonil carry out mixture, synergy or summation action is had to transplanting, rice transplanting, direct seading rice field annual weed and part perennial weed within the scope of certain mixed ratio, after further study, the present invention is completed.
Summary of the invention:
Technical problem to be solved by this invention is to provide a kind of Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil of efficient, low toxicity, broad weed-killing spectrum.
Technical problem to be solved by this invention adopts following technical scheme to realize:
Contain a Herbicidal composition for rice field for Oxyfluorfen and pyraclonil, its active component comprises Oxyfluorfen and pyraclonil.
The weight ratio of described Oxyfluorfen and pyraclonil is 1 ~ 50:1 ~ 50, preferably 1 ~ 10:1 ~ 10.
Described active component accounts for 1 ~ 80% of Herbicidal combinations gross weight, and preferably 5 ~ 50%.
This Herbicidal combinations also comprises auxiliary agent and excipient.
Described auxiliary agent and excipient are made up of solvent, cosolvent, dispersant, wetting agent, disintegrant, emulsifier, antifreeze, defoamer, thickener, filler and deionized water.
This Herbicidal combinations can be mixed with any formulation agriculturally allowed.
The formulation of this Herbicidal combinations comprises water dispersible granules, missible oil, aqueous emulsion, suspending agent and wetting powder.
This Herbicidal combinations comprises following constituent content when making water dispersible granules: Oxyfluorfen 1 ~ 50%, pyraclonil 1 ~ 30%, dispersant 3 ~ 12%, wetting agent 1 ~ 6%, disintegrant 1 ~ 20%, filler add to 100%.
This Herbicidal combinations comprises following constituent content when making missible oil: Oxyfluorfen 1 ~ 30%, pyraclonil 1 ~ 20%, emulsifier 3 ~ 12%, cosolvent 1 ~ 10%, solvent add to 100%.
This Herbicidal combinations comprises following constituent content when making aqueous emulsion: Oxyfluorfen 1 ~ 20%, pyraclonil 1 ~ 10%, emulsifier 2 ~ 10%, solvent 1 ~ 30%, defoamer 0.05 ~ 1%, thickener 0.1 ~ 5%, antifreeze 1% ~ 10%, deionized water add to 100%.
This Herbicidal combinations comprises following constituent content when making suspending agent: Oxyfluorfen 1 ~ 30%, pyraclonil 1 ~ 20%, dispersant 2 ~ 10%, wetting agent 2 ~ 10%, defoamer 0.05 ~ 1%, thickener 0.1 ~ 5%, antifreeze 1 ~ 10%, deionized water add to 100%.
This Herbicidal combinations comprises following constituent content when making wetting powder: Oxyfluorfen 1 ~ 60%, pyraclonil 1 ~ 40%, dispersant 3 ~ 12%, wetting agent 1 ~ 6%, filler add to 100%.
Described solvent be selected from dimethylbenzene, toluene, BTX aromatics solvent naphtha, vegetable oil solvent, white oil, biodiesel one or more.
Described cosolvent be selected from cyclohexanone, acetone, dimethylacetylamide, methyl alcohol, dimethyl sulfoxide (DMSO) any one or multiple.
Described dispersant is selected from alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, naphthalene sulfonic acid-formaldehyde condensation product, aryl phenol polyoxyethylene succinate sulfonate, octylphenol polyethylene oxyethylene group ether sulfate, polycarboxylate, lignosulfonates, the phonetic formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, aliphatic acid polyethenoxy ether, one or more in ester APEO.
Described wetting agent is selected from aliphatic acid polyethenoxy ether, pulls open powder, one or more in lauryl sodium sulfate, dodecyl sodium naphthalene sulfonate, neopelex, calcium dodecyl benzene sulfonate.
Described disintegrant be selected from bentonite, urea, ammonium sulfate, aluminium chloride, glucose one or more.
Described emulsifier is selected from: alkyl benzene calcium sulfonate, polyoxyethylene nonylphenol ether and phosphate thereof, phenyl phenol polyoxyethyl ether and phosphate thereof, styrene polyoxyethylene ether ammonium sulfate salt, alkyl biphenyl ether disulfonic acid magnesium salts, triethanolamine salt, benzyl dimethyl phenol polyoxyethyl ether, alkylphenol-formaldehyde resin polyoxyethyl ether, phenethyl fluosite polyoxyethyl ether, phenethyl phenol polyoxyethanyl polypropylene-base ether and phosphate thereof, ethylene oxide-propylene oxide block copolymer, castor oil polyoxyethylene ether, sorbitan monostearate, sorbitan fatty acid ester APEO, one or more in fat alcohol alcohol APEO.
Described antifreeze be selected from ethylene glycol, propane diols, glycerine, polyethylene glycol, urea, sodium chloride one or more.
Described defoamer is selected from silicone, C
8 ~ 10aliphatic alcohols, C
10 ~ 20one or more in saturated fat acids (as capric acid) and acid amides, silicone oil, silicone compound.
Described thickener be selected from xanthans, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol one or more.
Described filler be selected from kaolin, diatomite, bentonite, attapulgite, white carbon, starch, precipitated calcium carbonate one or more.
Above-mentioned auxiliary agent and excipient comprise: cosolvent, solvent, dispersant, wetting agent, disintegrant, emulsifier, antifreeze, defoamer, thickener, filler; not be defined in this; skilled person thinks that feasible related auxiliaries and excipient are within protection scope of the present invention, and the present invention does not limit at this.
The described Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil is mainly used in transplanting rice field, rice transplanting paddy field, direct seading rice field, before can be used for seedling and seedling post processing, has and closes and cauline leaf process effect.
This Herbicidal combinations is mainly used in paddy field control annual weed and perennial weed.
The invention has the beneficial effects as follows:
(1) this Herbicidal combinations can be applicable to transplanting rice field, rice transplanting paddy field and direct seading rice field, before seedling, postemergence application has excellent weed control efficacy, have and close and cauline leaf process double effects, extend the optimum period for applying fertilizer compared with single dose, expand function spectrum;
(2) this Herbicidal combinations has the effect of obviously synergy and expanding prevention spectrum on paddy field weeding.As barnyard grass, moleplant seed and short arrowhead, there is excellent preventive effect for the rice field malignant weed being difficult to prevent and kill off, can hold concurrently except annual broadleaf weed, sedge weed and grassy weed and some perennial weeds;
(3) this Herbicidal combinations can delay Weed Resistance, and herbicidal spectrum is wide, and the lasting period is long, and to paddy rice and second stubble crop safety, is a kind of desirable herbicide for paddy field.
Embodiment:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
The preparation of the Herbicidal composition for rice field 1, containing Oxyfluorfen and pyraclonil
Embodiment 1
45% Oxyfluorfen and pyraclonil water dispersible granules
By above-mentioned material method pulverizing in proportion, granulation, drying, obtained 45% Oxyfluorfen of screening and pyraclonil water-dispersible granules.
Embodiment 2
28% Oxyfluorfen and pyraclonil missible oil
By above-mentioned material method dissolving in proportion, be uniformly mixed obtained 28% Oxyfluorfen and pyraclonil missible oil.
Embodiment 3
14% Oxyfluorfen and pyraclonil aqueous emulsion
Evenly obtained 14% Oxyfluorfen and pyraclonil aqueous emulsion are sheared in above-mentioned material method dissolving in proportion, mixing.
Embodiment 4
24% Oxyfluorfen and pyraclonil suspending agent
By above-mentioned material method mix and blend, sand milling, obtained 20% Oxyfluorfen of allotment and pyraclonil suspending agent in proportion.
Embodiment 5
50% Oxyfluorfen and pyraclonil wetting powder
By above-mentioned material in proportion method mix, shatter, cross obtained 50% Oxyfluorfen of air-flow and pyraclonil wetting powder.
2, Oxyfluorfen and the experiment of pyraclonil composition different ratio co-toxicity
Reagent agent: the former medicine of Oxyfluorfen of 95%, the former medicine of pyraclonil of 96%, above-mentioned former medicine provides by Anhui Hua Xing Chemical Co., Ltd. Technical Development Division.
Test target: barnyard grass.
Experimental procedure: adopt potted plant cauline leaf facture (NY/T1155.4-2006): at the in-built quantitative soil of polypots of high 6 ㎝, diameter 9 ㎝, will for the sowing of examination target weed seed 15-20 grain in polypots, be placed in incubator after the fine earth that lid 0.5-1 ㎝ is thick and cultivate, treat that weeds grow to the 2-4 leaf phase and carry out cauline leaf spraying process, often process repetition 4 times, and set the process not containing medicament as contrasting.Process is placed in incubator and continues to cultivate, the growing state of routine observation target weeds, estimate target damage symptoms and growth inhibition situation after 15d, and claim acrial part fresh weight or strain fresh weight, evaluate medicament to the toxicity action of target weeds with form fresh weight inhibition.
Control time: estimate target damage symptoms and growth inhibition situation after test process 15d, and claim acrial part fresh weight.
Data statistics and analysis: according to investigation statistics, calculate fresh weight inhibition (%).
Fresh weight inhibition P (%)=(contrast fresh weight-process fresh weight)/process fresh weight × 100%.
Synergy evaluation method: evaluate weed killer herbicide mode of application (NY/T1155.7-2006) according to Gowing method, its formula is as follows:
E
0＝X+Y-XY/100
In formula: X be Oxyfluorfen alone with certain dosage time actual measurement preventive effect to target weeds;
Y be pyraclonil alone with certain dosage time actual measurement preventive effect to target weeds;
E
0for the theoretical value to target weeds fresh weight inhibition when Oxyfluorfen and pyraclonil two kinds of pharmacy mix;
E be Oxyfluorfen and pyraclonil two kinds of pharmacy mix time preventive effect is surveyed to target weeds fresh weight.
Evaluation criterion:
Work as E-E
0synergistic effect is expressed as, as-10% < E-E during > 10%
0be expressed as summation action during < 10%, work as E-E
0antagonism is expressed as during <-10%.
Table 1 Oxyfluorfen and pyraclonil single dose use the actual measurement preventive effect to barnyard grass
Table 2 Oxyfluorfen and pyraclonil composition different ratio are tested barnyard grass co-toxicity
Virulence test shows, is 1:9 ~ 9:1 in active ingredient Oxyfluorfen and pyraclonil ratio, and treatment dosage is 20g.a.i./hm
2time, have certain synergistic effect, wherein Oxyfluorfen and pyraclonil ratio are that the synergistic effect of 2:3 ~ 3:2 is the most obvious.For fully showing practical value of the present invention, inventor also carries out further field control effectiveness test, to evaluate its field practical application effect.
3, Oxyfluorfen and pyraclonil composition field control effectiveness test
Reagent agent: 5 kinds of re-compounded binary herbicides in embodiment 1-5, is respectively 45% Oxyfluorfen and pyraclonil water dispersible granules, 28% Oxyfluorfen and pyraclonil missible oil, 14% Oxyfluorfen and pyraclonil aqueous emulsion, 24% Oxyfluorfen and pyraclonil suspending agent, 50% Oxyfluorfen and pyraclonil wetting powder.
Contrast medicament: 24% oxyfluorfen EC, 3.6% pyraclonil suspending agent.
For studying thing: transplant field paddy rice.
Prevent and kill off object: barnyard grass, needle spikesedge herb, short arrowhead, Monochoria vaginalis.
Test method: according to the area of experimental plot, the good various medicament of precise, and after being watered dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head that sprinkler selection weed killer herbicide is special.During spraying, liquid be noted evenly to spray application in experimental plot, accomplish the phenomenon not having drain spray, many sprays.After test, after medicine, 20d, 40d observe weeds death condition respectively, calculate preventive effect.
Embodiments of the invention preparation Herbicidal Testing Trials effect is in table 3
Table 3 Oxyfluorfen and pyraclonil composition field control effectiveness test preventive effect (after medicine 40d)
As can be seen from the field test results of table 3, after medicine 40 days, the treatment agent usage amount of embodiment 1-5 was 30g.a.i./hm
2in time, is all obviously higher than each single dose to the preventive effect of paddy field barnyard grass, needle spikesedge herb, short arrowhead, Monochoria vaginalis and is used alone.As can be seen here, said composition is worth applying in agricultural production.
To sum up virulence and field experiment result verification, the present invention contains the Herbicidal combinations of Oxyfluorfen and pyraclonil, is mainly used in preventing and kill off paddy field annual weed and some perennial weeds, to Target crops safety, compared with single dose, Herbicidal combinations of the present invention has mechanism of action uniqueness, and compound synergic is obvious, can delay Weed Resistance, herbicidal spectrum is wide, lasting period is long, and to paddy rice and second stubble crop safety, is a kind of desirable herbicide for paddy field.So research and development of the present invention and popularization have great social effect and environment protection significance.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (13)
1. contain a Herbicidal composition for rice field for Oxyfluorfen and pyraclonil, it is characterized in that: its active component comprises Oxyfluorfen and pyraclonil.
2. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 1, is characterized in that: the weight ratio of described Oxyfluorfen and pyraclonil is 1 ~ 50:1 ~ 50.
3. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 2, is characterized in that: the weight ratio of described Oxyfluorfen and pyraclonil is 1 ~ 10:1 ~ 10.
4. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 1, is characterized in that: described active component accounts for 1 ~ 80% of Herbicidal combinations gross weight.
5. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 4, is characterized in that: described active component accounts for 5 ~ 50% of Herbicidal combinations gross weight.
6. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 1, is characterized in that: this Herbicidal combinations also comprises auxiliary agent and excipient.
7. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 1 or 6, is characterized in that: this Herbicidal combinations can be mixed with any formulation agriculturally allowed.
8. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 7, is characterized in that: the formulation of this Herbicidal combinations is water dispersible granules, missible oil, aqueous emulsion, suspending agent or wetting powder.
9. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to any one of claim 1 to 8, is characterized in that: this Herbicidal combinations is applied on the growth place of undesirable plant or leaf or stem.
10. the Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 9, is characterized in that: this Herbicidal combinations is mainly used in paddy field control annual weed and perennial weed.
11. Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 10, is characterized in that: this Herbicidal combinations is mainly used in transplanting rice field, rice transplanting paddy field, direct seading rice field.
12. Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 10, it is characterized in that: described annual weed is annual gramineous weed, sedge weed and broad leaved weed, comprise barnyard grass, Paspalum distichum, rice Leersia Sw, lady's-grass, agrostis stolonifera, needle spikesedge herb, amur foxtail, northeast Tian Mao, wolf tail grass, special-shaped nutgrass flatsedge, sunshine wooden dipper stroke grass, cyperus iria, firefly Lin, Japanese grass, flat stalk grass, Monochoria vaginalis, Monochoria korsakowii, rhizoma alismatis, pipewort, mexicana, Procumbent Falsepimpernel, triquetrousc murdannia herb, alternanthera philoxeroides, flower Lin.
13. Herbicidal composition for rice field containing Oxyfluorfen and pyraclonil according to claim 10, is characterized in that: described perennial weed comprises short arrowhead, four leaf duckweeds, wild arrowhead, pondweed, Japanese Fischer grass, convexutricle sedge herb, water chestnut, Paspalum distichum, the not plump shell grass of rice shape.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107212013A (en) * | 2017-07-31 | 2017-09-29 | 青岛瀚生生物科技股份有限公司 | Herbicidal composition for rice field and its application |
| CN116746586A (en) * | 2023-07-03 | 2023-09-15 | 黑龙江省农业科学院植物保护研究所 | Ternary compound weeding composition and application thereof |
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| JP2000319114A (en) * | 1999-04-28 | 2000-11-21 | Agrevo Japan Kk | Herbicide having synergistic action |
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| CN107212013A (en) * | 2017-07-31 | 2017-09-29 | 青岛瀚生生物科技股份有限公司 | Herbicidal composition for rice field and its application |
| CN116746586A (en) * | 2023-07-03 | 2023-09-15 | 黑龙江省农业科学院植物保护研究所 | Ternary compound weeding composition and application thereof |
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