CN103004771A - Active composition and herbicide thereof for preventing and eliminating weeds in rape farmland - Google Patents
Active composition and herbicide thereof for preventing and eliminating weeds in rape farmland Download PDFInfo
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- CN103004771A CN103004771A CN2012104526869A CN201210452686A CN103004771A CN 103004771 A CN103004771 A CN 103004771A CN 2012104526869 A CN2012104526869 A CN 2012104526869A CN 201210452686 A CN201210452686 A CN 201210452686A CN 103004771 A CN103004771 A CN 103004771A
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Abstract
The invention provides an active composition for preventing and eliminating weeds a rape farmland. The active composition contains three active ingredients, wherein the first active ingredient is pyribambenz-propyl or iso-pyribambenz-propyl, the second active ingredient is clopyralid, and the third active ingredient is high-efficiency haloxyfop-methyl; and the mass ratio of the first active ingredient to the second active ingredient to the third active ingredient is (1.25-5):(2-8):(0.5-2) in sequence. The active composition provided by the invention has high activity on single/double cotyledon seeds in rape fields, and has the advantages of increasing the herbicide controlling spectrum, reducing the dosage quantity, improving the crop security and the like.
Description
Technical field
The present invention relates to a kind of active compound for the Controlling Weeds in Rape Fields field weed.
Background technology
China is maximum in the world rape producing country, rapeseed cultivation area and gross yield account for the world 1/3 at present, rape is the important economic oil crop of China, and the Yangtze river basin rapeseed cultivation area of China, gross yield account for 1/4 of the world, is maximum rape producing region.Along with the adjustment of China's agricultural structure, the cultivated area of Yangtze river basin wheat, barley and highland barley reduces year by year, and the cultivated area of economic crops rape increases year by year.And the Yangtze river basin winter rape field weed rate of being injured is 46.9%, and the general time underproduction 10～20% can reach more than 50% when crop smothering is serious, is a key factor that affects rapeseed quality and output.The Rapeseed Field grassy weed is take amur foxtail, Alopecurus, annual bluegrass, caput Cao He Wang grass as main, and broadleaf weed is take ox chickweed, chickweed, tongue of sparrow grass, grasswort, clearvers and common vetch as main.At China's Rapeseed Field weed killer herbicide commonly used haloxyfop-r-methyl, Quizalotop-ethyl arranged, take and pounce on clean, Gao Teke, ethametsulfuron, Acetochlor etc.The herbicide spectrum that has in these kinds is narrow, can only prevent and kill off part unifacial leaf or broadleaf weed, such as haloxyfop-r-methyl, Quizalotop-ethyl and Gao Teke.The kind that has is long because of residual life, easily second stubble crop is impacted such as ethametsulfuron.
Propyl-ester nitorfen and iso-propyl-ester nitrofen are by the common 2-2-pyrimidinyl oxy of finding of our unit and Shanghai organic chemistry research institute of the Chinese Academy of Sciences-N-arylbenzylamines class weed killer herbicide, and chemical name and structure are seen structural formula (I) and (II):
The propyl-ester nitorfen iso-propyl-ester nitrofen
4-[2-(4,6-dimethoxy-2-2-pyrimidinyl oxy) benzyl is amino] Propyl benzoate 4-[2-(4,6-dimethoxy-2-2-pyrimidinyl oxy) benzyl amino] isopropyl benzoate
This kind has the selectivity of height to Rapeseed Field, and Rapeseed Field main weeds such as amur foxtail, Alopecurus, ox chickweed, chickweed and tongue of sparrow grass are had good preventive effect, is the new herbicides of a class highly effective and safe, has great application and development prospect.The Preparation Example of propyl-ester nitorfen and iso-propyl-ester nitrofen is existing narration in Chinese invention patent (application number 00130735.5) and PCT patent (WO02/34724A1).
Clopyralid (English name Clopyralid), chemical name: 3,6-dichloropyridine-2-carboxylic acid
(3,6-dichloropyridine-2-carboxylic acid), CAS accession number [1702-17-6].Be a kind of artificial synthetic auxin, its chemical constitution and many natural auxins are similar, but have better persistence in the tissue of plant.It mainly the root by plant and leaf absorb then and in plant corpus, conduct, so its conductive performance is stronger.After the weeds dispenser, it is moved up and down and is transmitted to rapidly whole plant by the blade of plant or root absorption in plant corpus.Clopyralid is by suppressing division and the growth of cell, and effectively composite family, the pulse family weeds such as field corn sow thistle, Herb of Common Nipplewort, common vetch such as Controlling Weeds in Rape Fields, corn, lawn because its conducting power is stronger, produce effect to perennial dark root weeds.
Haloxyfop-r-methyl has another name called haloxyfop-r-methyl (English name Haloxyfop-R-methyl), that cauline leaf is processed weed killer herbicide behind the fragrant phenoxy phenoxy propionic acid seedling, cauline leaf can be absorbed by the leaf of grassy weed after processing very soon, conduct to whole plant, accumulate in the plant meristematic tissue, suppress acetyl-CoA carboxylase in the plant corpus, cause the fatty acid biosynthesis block and kill weeds.Sprinkling falls into the medicament of soil easily by root absorption, also can play the herbicide effect.To from emerging to tillering, the annual and perennial grassy weed at the initial stage of earing has good preventive effect, and is invalid to broadleaved herb and nutgrass flatsedge.Can be used for the broad leaf crop fields such as soybean, cotton, peanut, rape and wild cabbage and prevent and kill off the grassy weeds such as amur foxtail, barnyard grass, lady's-grass, green foxtail, eleusine indica, wild oat.
Because Rapeseed Field uses the single variety weed killer herbicide for a long time, certain variation has occured in weed community, the weeds in field outstanding problem, the activity of weeding composition that needs a kind of novel Controlling Weeds in Rape Fields field weed of exploitation, to enlarge the herbicide spectrum, to improve preventive effect, delaying drug resistance, reduction cost, solve the crop smothering problem in the growth of rape process.
Summary of the invention
The object of the present invention is to provide kind of the active compound of Controlling Weeds in Rape Fields field weed, have the advantage of wide spectrum, efficient and low toxicity.
For reaching goal of the invention the technical solution used in the present invention be:
A kind of active compound for the control rape field weed, contain three kinds of active components, the first active component is propyl-ester nitorfen or iso-propyl-ester nitrofen, the second active component is clopyralid, the third active component is haloxyfop-r-methyl, and the quality proportioning between described the first active component, the second active component and the third active component is followed successively by 1.25～5:2～8:0.5～2.
As preferred mode, the quality proportioning between above-mentioned the first active component, the second active component and the third active component is followed successively by 2.5～5:4～8:1～2.
Active compound of the present invention can be formulated into missible oil, suspending agent, suspension emulsion, microemulsion, aqueous emulsion, pulvis, granule or capsule, the weight percentage that contains active compound in described missible oil, suspending agent, suspension emulsion, microemulsion, aqueous emulsion, pulvis, granule or the capsule is 5～95%, and all the other are carrier.The weight percentage that contains active compound in missible oil, suspending agent, suspension emulsion, microemulsion, aqueous emulsion, pulvis, granule or the capsule is preferably 10～90%.
When being formulated into suspension emulsion or aqueous emulsion, preferably contain the active compound of 7.5%～15% weight percentage in described suspension emulsion or the aqueous emulsion.
The present invention can use so long as be usually used in the carrier of herbicidal composition on the agricultural chemicals to carrier without limits, both can be that solid also can be liquid.
Liquid-carrier comprises water and organic solvent.When water was cooked solvent or thinner, organic solvent also can be used as adjuvant or antifreeze additive.Suitable organic solvent comprises aromatic hydrocarbons, for example benzene, dimethylbenzene, toluene, alkylbenzene, Fluhyzon and chlorinated aromatic hydrocarbons; Chlorinated aliphatic hydrocarbon, for example vinyl chloride, chloroform, carrene, chloroform, carbon tetrachloride and many chloroethanes; Aliphatic hydrocarbon, for example petroleum distillate, cyclohexane, light mineral oil and paraffin.Preferred organic solvent is polar solvent, comprises alcohols, such as isopropyl alcohol, butanols, ethylene glycol, propane diols, glycerine, sorbierite, phenmethylol, sugar alcohol and cyclohexanol etc.; Their ether and ester; Ketone is arranged, for example acetone, MEK, methyl iso-butyl ketone (MIBK), cyclohexanone and dimethyl formamide, dimethyl sulfoxide (DMSO) and N-methyl-pyrrolidones; With vegetable oil and the molten fiber of methyl.Above-mentioned organic solvent both can be used alone, but also also mix together, and can also mix together with water.
Suitable solid carrier comprises natural or synthetic clay and silicate, for example natural silica and diatomite; Magnesium silicate, for example talcum; Magnesiumaluminumsilicate, for example kaolinite, kaolin, imvite and mica; White Carbon black, calcium carbonate, precipitated calcium carbonate; Calcium sulphate; Lime stone; Sodium sulphate; Ammonium salt such as ammonium sulfate, hexamethylene diamine; Synthetic hydrated silica and synthetic calcium silicates or alumina silicate.Also comprise natural and synthetic resin, for example cumarone resin, polyvinyl chloride and cinnamic polymer and copolymer.Also have in addition solid polystream phenol, pitch, paraffin and solid fertilizer, for example perphosphate all can be used as solid carrier.
Herbicide used in rape field of the present invention can also add surfactant, thickener, defoamer and oxidant etc.
Surfactant of the present invention can be emulsifier, dispersant or wetting agent; Can be ionic or nonionic.Suitable surfactant comprises: the sodium salt of polyacrylic acid and lignin sulfonic acid and calcium salt; Contain in the molecule fatty acid of at least 12 carbon atoms or fatty amine and oxirane and/polycondensation product of expoxy propane; The sulphate of their polycondensation product or sulfonate; At least contain the sulfuric acid of 10 carbon atoms or alkali metal or the alkali salt of sulfonic acid in molecule, better is sodium salt, such as sodium salt, alkylaryl sodium sulfonate and the neopelex of lauryl sodium sulfate, Teepol, sulfonated castor oil; The copolymer of the polymer of oxirane, oxirane and expoxy propane.
Emulsifier of the present invention comprises nonionic emulsifier and commercially available emulsifier.The preferred polyoxyethylene fatty acid fat of nonionic emulsifier, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine, for example ethoxylated castor oil, polyoxyethylene (n
20) phenethyl phenol ether through reaction oleate, alkylaryl polyoxyethylene poly-oxygen propylene aether, alkylaryl formaldehyde resin APEO, triphenyl vinyl phenol polyoxyethylene (n
20), ether phosphoric acid triethanolamine salt, hexichol ethyl phenolic group APEO (n
18) formaldehyde condensation products, diphenyl phenol polyethenoxy (n
18) polyethenoxy ether (n
20) etc.Commercially available emulsifier comprises: agricultural newborn 0201B, agricultural newborn 0203B, farming breast 100
#, farming breast 500
#, farming breast 600
#, agricultural newborn 600-2
#, farming breast 1601, farming breast 2201, agricultural newborn NP-10, agricultural newborn NP-15, farming breast 507
#, agricultural newborn OX-635, agricultural newborn OX-622, agricultural newborn OX-653, agricultural newborn OX-667, agricultural newborn CS-7, peaceful breast 36
#
Dispersant of the present invention comprises: sodium lignin sulfonate; pull open powder; calcium lignosulfonate; condensation compound of methyl naphthalene sulfonic acid and formaldehyde; naphthalene sulfonic acid-formaldehyde condensation product; the methanonaphthalene sodium sulfonate; oleic acid methylamino ethylsulfonic acid sodium; the dibutyl naphthalene sulfonic acid-formaldehyde condensation product; phosphate such as calgon; the alkylphenol-polyethenoxy based phosphates; alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate; N-methyl-fatty acyl group-sodium taurocholate alkylphenol polyoxyethylene formaldehyde condensation products; aralkyl phenol polyethenoxy ether phosphate alkylphenol polyoxyethylene; the castor oil ethylene oxide adduct; ethylene oxide-propylene oxide block copolymer alkylphenol polyoxyethylene formaldehyde condensation products; alkylphenol-polyethenoxy polyethenoxy ether and methylcellulose.
Wetting agent of the present invention comprises: sldium lauryl sulfate; alkylol polyoxyethylene groups ether sodium sulfate; octylphenol polyethylene oxyethylene group ether sulfate; alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate; sodium alkyl sulfonate; neopelex; Negel; dialkyl succinylsuccinate sulfonate; lauryl alcohol polyethylene glycol oxide base ether sulfonic acid sodium; the alkyl amide sodium taurocholate; aliphatic alcohol polyethenoxy base ether; alkylphenol-polyethenoxy base ether; the polyoxyethylene polyoxypropylene block polymer; sorbitan fatty acid ester polyoxyethylene ether etc.
Thickener of the present invention both can be artificial synthetic, for example carboxymethyl alcohol, polyvinyl alcohol or polyvinyl acetate; Also can be natural water-soluble polymer, such as xanthans, gelatin, gum Arabic, polyvinylpyrrolidone, Magnesiumaluminumsilicate, polyvinyl alcohol, polyethylene glycol, phenolic resins, shellac, carboxymethyl cellulose and sodium alginate etc.
Defoamer of the present invention is preferably: bubble enemy, silicone, C
8～10Fatty alcohol, C
10～20Saturated fat acids and acid amides etc.
Antifreezing agent of the present invention is preferably: propane diols, ethylene glycol, glycerine or urea etc. can also be other this areas antifreezing agents commonly used.
Herbicide used in rape field of the present invention can be by general method preparation.For example active substance is mixed with liquid flux and/or solid carrier, add simultaneously surfactant such as emulsifier, dispersant, stabilizing agent, wetting agent, can also add as required other auxiliary agent such as adhesive, defoamer, oxidant, thickener, suspending agent, antifreezing agent etc.
Herbicide used in rape field of the present invention can directly be made the finished product preparation form, namely can be directly used in rape field weeding and need not configuration, also can make concentrate or concentrate form, in the containers such as bucket or tank, be configured to the solution of desired concn before using with water.
Active compound of the present invention especially is suitable for preventing and treating the weeds such as Rapeseed Field amur foxtail, Alopecurus, annual bluegrass, caput Cao, Wang grass, ox chickweed, chickweed, tongue of sparrow grass, grasswort, clearvers and common vetch.
When active compound of the present invention was applied to prevent and treat rape field weed and conventional grassy weed and broad leaved weed, the amount of application of described active compound was preferably 112.5～225gai/ha, more preferably 150～225gai/ha.
The relative prior art of the active compound of control rape field weed of the present invention and preparation thereof has the following advantages:
(1) broad weed-killing spectrum, activity of weeding is high
The weeds such as the main Controlling Weeds in Rape Fields of active ingredient propyl-ester nitorfen or iso-propyl-ester nitrofen field amur foxtail, Alopecurus, ox chickweed, chickweed and tongue of sparrow grass, the active ingredient clopyralid to present Rapeseed Field Major Compositae, pulse family is annual and the perennial weed preventive effect is excellent, the active ingredient haloxyfop-r-methyl is excellent to grassy weed preventive effects such as Rapeseed Field mid-early maturity standing grain, caput Cao, Wang grass and wild oats.Three kinds of combination of active principles produce summation action, Effective Raise herbicide spectrum and preventive effect, and main single, double cotyledon weeds activity is all higher at present to Rapeseed Field, can effectively solve the crop smothering problem of growth of rape process.
(2) crop safety is high
Active ingredient propyl-ester nitorfen or iso-propyl-ester nitrofen, clopyralid and haloxyfop-r-methyl that the present invention selects all are Gao Xiao ﹑ low toxicity, eco-friendly weed killer herbicide, and the product after composite shows rape safety through lot of experiments and application.Composite by making up, reduced the consumption of propyl-ester nitorfen or iso-propyl-ester nitrofen and clopyralid, avoided propyl-ester nitorfen or iso-propyl-ester nitrofen to the inhibition of growth of rape.Herbicidal composition of the present invention improves the rape safety, and to succession crop safety.
(3) without antagonism
The screening of the formula indoor of herbicidal composition provided by the present invention and bioassay results show: the combination between two kinds of active ingredient is summation action to the activity of weeding of test weeds, without antagonism.
(4) complementation of action characteristic
Active ingredient propyl-ester nitorfen or iso-propyl-ester nitrofen are the ALS enzyme inhibitor among the present invention, clopyralid is hormone herbicide, haloxyfop-r-methyl is the ACC enzyme inhibitor, the three is the different classes of and weed killer herbicide mechanism of action, compositely can have complementary advantages, reduces each plant demand, delay Weed Resistance.
Embodiment
Come the present invention is further specified below in conjunction with specific embodiment, but do not limit the invention to these embodiments.One skilled in the art would recognize that the present invention contained all alternatives, improvement project and the equivalents that may comprise in claims scope.
One, preparation preparation
1, the preparation of suspension emulsion
According to the prescription requirement, take water as medium, former medicine or former oil dispersant ﹑ emulsifier and antifreezing agent etc. are added in the sand milling still, porphyrize is made suspending agent.Such as embodiment 1～2 prescription.
Embodiment 1:15% suspension emulsion prescription
Embodiment 2:7.5% suspension emulsion prescription
2, the preparation of aqueous emulsion
Yuan Yao ﹑ Rong Ji ﹑ emulsifier and co-emulsifier are added together, make and be dissolved into even oil phase.Shui ﹑ antifreeze etc. is mixed, becomes the homogeneous water.Under high-speed stirred, water is joined oil phase or oil phase is joined water, form the aqueous emulsion of favorable dispersibility.Such as embodiment 3～4 prescriptions.
Embodiment 3:15% water emulsion formula
Embodiment 4:7.5% water emulsion formula
Two, test and evaluation method
Above herbicidal composition is carried out the greenhouse pot culture active determination test, between the comparative composition, and the activity of weeding between composition and the single dose, to determine the best ratio range of composition and crop safety.
The herbicidal composition formulation screening test carries out according to following method:
Test is the sandy loam of preparation with soil, and the activity of weeding test is 9.5cm with basin alms bowl diameter.
The cauline leaf spraying was processed after the greenhouse pot culture method was carried out bud.The liquid of processing is needs dosage for the preparation thin up of each single dose.
After the basin alms bowl of processing leaves standstill 1 day, put into the greenhouse, regularly water, used afterwards the activity of weeding of each repetition of ocular estimate observed and recorded compound, and be averaging activity of weeding in 30 ~ 60 days.
With the activity of weeding of hazard of plant symptom (inhibition, deformity, yellow, albefaction) performance degree range estimation compound, 0 expression does not have herbicidal effect or to crop safety, weeds or crop are killed in 100% expression fully.Activity of weeding and crop safety ocular estimate evaluation criterion see Table 1, and the biological activity determination test target of selection sees Table 2.
Table 1 activity of weeding and crop safety ocular estimate evaluation criterion
The weeds kind of table 2 biological activity determination test usefulness
| Chinese name | English name | Formal name used at school |
| Amur foxtail | Equal?Alopecurus | Alopecurus?aequalis |
| The caput grass | Ditch?Polypogon | Polypogon?fugax?Nees |
| Grasswort | Grasswort | Cerastium?arvense |
| Common vetch | Common?Vetch | Vicia?sativa |
Active compound synergy Types Assessment method is as follows:
With the Colby method activity of weeding after using with is tested, i.e. E
0=XYZ/10000, in the formula, X is the weeds survival rate of consumption weed killer herbicide A when being P; Y is the weeds survival rate of consumption weed killer herbicide B when being Q; Z is the weeds survival rate of consumption weed killer herbicide C when being W; E
0The theoretical weeds survival rate of weed killer herbicide when being (P+Q+W) for consumption (A+B+C); E is the actual weeds survival rate of each processing.Press the Colby method, work as E
0-E〉10% the time, illustrate that mixture herbicide produces synergistic effect; Work as E
0During-E＜-10%, illustrate that mixture herbicide produces antagonism; Work as E
0-E value illustrates that mixture herbicide produces addition between ± 10% the time.
Three, composite formula screening and activity of weeding test
The activity of weeding that propyl-ester nitorfen, clopyralid and haloxyfop-r-methyl are used different proportionings with the results are shown in Table 3.
Result of the test shows: propyl-ester nitorfen, clopyralid and haloxyfop-r-methyl are used with the activity of weeding of amur foxtail, caput grass, grasswort and common vetch very high.(the A2B2C2～A3B3C3) process of all proportionings under propyl-ester nitorfen 37.5gai/ha, clopyralid 60gai/ha and the above dosage of haloxyfop-r-methyl 15gai/ha, supply to try the activity of weeding of weeds up to 90 ~ 100% to 4 kinds, overall activity of weeding is higher than three kinds of single doses, and each E that processes in this ratio range
0-E is between ± 10, and the composite synergy type of three is summation action, does not have antagonism.
Consider synergy type, activity of weeding and the Financial cost of three kinds of pharmacy mix, the proportioning of recommending propyl-ester nitorfen or iso-propyl-ester nitrofen, clopyralid and haloxyfop-r-methyl is that propyl-ester nitorfen or isopropyl ester grass ether ︰ two chloropyridines acid ︰ haloxyfop-r-methyl are 1.25～5:2～8:0.5～2, more preferably 2.5～5 ︰, 4～8 ︰ 1～2.
Table 3 propyl-ester nitorfen, clopyralid and haloxyfop-r-methyl ternary built synergy type checking
Four, composition is tested the weeds activity of weeding
Result of the test table 4 shows: the propyl-ester nitorfen single dose is at 18.75gai/ha, 37.5gai/ha and 75gai/ha dosage is processed lower, to amur foxtail, the caput grass, the activity of weeding of grasswort and common vetch is respectively 60～95%, 30～75%, 50～95% and 0%, the iso-propyl-ester nitrofen single dose is at 18.75gai/ha, 37.5gai/ha and the activity of weeding under the processing of 75gai/ha dosage is respectively 65～98%, 40～75%, 60～95% and 0%, clopyralid is at 30gai/ha, activity of weeding under 60gai/ha and 120gai/ha dosage are processed is respectively 0,0,30～50% and 100%, haloxyfop-r-methyl is at 7.5gai/ha, activity of weeding under 15gai/ha and 30gai/ha dosage are processed is respectively 85～98%, 80～98%, 0 and 0.And propyl-ester nitorfen or iso-propyl-ester nitrofen, clopyralid and three composite reagent compositions of haloxyfop-r-methyl are under (18.75+30+7.5)～(75+120+30) gai/ha dosage is processed, supplying the activity of weeding of examination weeds to 4 kinds is 90～100%, 85～100%, 60～100% and 95～100%, activity of weeding is higher, and the herbicide spectrum is obviously extensively processed in three single doses.As seen, said composition can effectively be controlled the single, double cotyledon weeds of Rapeseed Field under recommended dose.
Table 4 composition antagonism barnyard grass Herbicidal result
Five, the greenhouse pot culture safety testing of composition
Result of the test table 5 shows: under propyl-ester nitorfen or iso-propyl-ester nitrofen 300gai/ha, clopyralid 480gai/ha, haloxyfop-r-methyl 120gai/ha high dose were processed, composition be-5.62～10.0% to the growth inhibition ratio of rape, without obvious poisoning.And under processing at propyl-ester nitorfen 37.5gai/ha, clopyralid 60gai/ha, haloxyfop-r-methyl 15gai/ha dosage, supply to try the activity of weeding of weeds up to 90～100% to 4 kinds in the above-mentioned activity of weeding test.As seen, said composition selectivity between rape and rape field weed is higher.
Table 5 composition is to rape Security test result
Above-mentioned result of the test shows: this herbicidal composition to showing higher preventive effect for the examination weeds, is compared with single dose under optimal dose, has improved activity of weeding, has enlarged the herbicide spectrum, has reduced use cost.
Therefore, said composition can optionally be controlled the weeds object under recommended dose, simultaneously to target crop rape safety.
As seen, after the weed killer herbicide propyl-ester nitorfen of the different classes of and mechanism of action or iso-propyl-ester nitrofen, clopyralid and haloxyfop-r-methyl are composite, can have complementary advantages, enlarge the herbicide spectrum, reduce each plant demand.And said composition has no bibliographical information, at Rapeseed Field better application prospect is arranged.
Claims (6)
1. active compound that is used for the control rape field weed, it is characterized in that containing three kinds of active components, the first active component is propyl-ester nitorfen or iso-propyl-ester nitrofen, the second active component is clopyralid, the third active component is haloxyfop-r-methyl, and the quality proportioning between described the first active component, the second active component and the third active component is followed successively by 1.25～5:2～8:0.5～2.
2. according to the active compound for the control rape field weed claimed in claim 1, it is characterized in that the quality proportioning between the first active component, the second active component and the third active component is followed successively by 2.5～5:4～8:1～2.
3. according to the described active compound for the control rape field weed of one of claim 1 to 2, it is characterized in that described active compound is formulated into missible oil, suspending agent, suspension emulsion, microemulsion, aqueous emulsion, pulvis, granule or capsule, the weight percentage that contains active compound in described missible oil, suspending agent, suspension emulsion, microemulsion, aqueous emulsion, pulvis, granule or the capsule is 5～95%.
4. according to the active compound for the control rape field weed claimed in claim 3, it is characterized in that containing in described suspension emulsion or the aqueous emulsion active compound of 7.5%～15% weight percentage.
5. according to the application of active compound claimed in claim 1 in the control rape field weed, the amount of application that it is characterized in that described active compound is 112.5～225gai/ha.
6. according to the application of active compound claimed in claim 5 in the control rape field weed, the amount of application that it is characterized in that described active compound is 150～225gai/ha.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104430367A (en) * | 2014-11-27 | 2015-03-25 | 广东中迅农科股份有限公司 | Herbicidal composition for rapeseed field |
| CN107897188A (en) * | 2017-11-16 | 2018-04-13 | 安徽众邦生物工程有限公司 | A kind of Wheat field weeding composition containing iso-propyl-ester nitrofen and fluroxypyr |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104430367A (en) * | 2014-11-27 | 2015-03-25 | 广东中迅农科股份有限公司 | Herbicidal composition for rapeseed field |
| CN107897188A (en) * | 2017-11-16 | 2018-04-13 | 安徽众邦生物工程有限公司 | A kind of Wheat field weeding composition containing iso-propyl-ester nitrofen and fluroxypyr |
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Application publication date: 20130403 |