阅读说明：本技术 一种小麦田除草组合物 (Wheat field weeding composition ) 是由 贺建东 陈玉亭 王云辉 李庆新 马丽娜 王方玉 李涛 张祥菊 郭珊珊 刘振仁 于 2019-03-21 设计创作，主要内容包括：本发明涉及一种防除农田杂草的除草剂组合物及用途,具体涉及一种用于防治小麦田间杂草的除草剂,它是由甲基二磺隆、双氟磺草胺以及二甲四氯异辛酯为活性成分组成的三元除草剂混剂,该组合物中甲基二磺隆、双氟磺草胺以及二甲四氯异辛酯的重量比为1~10:1~15:1~80,为提高产品的安全性能添加了适量的安全剂吡唑解草酯。本发明组分合理,防效优于各个组份单独使用的活性,具有增效的作用,扩大杂草防治谱,减少施药次数,降低防治成本,减缓杂草抗性的产生,对农作物安全性好,符合农药制剂的安全性要求。(The invention relates to a herbicide composition for preventing and removing farmland weeds and application thereof, in particular to a herbicide for preventing and treating wheat farmland weeds, which is a ternary herbicide mixture comprising active ingredients of mesosulfuron-methyl, florasulam and methoxone isooctyl ester, wherein the weight ratio of the mesosulfuron-methyl, the trifloxystrobin and the methoxone isooctyl ester in the composition is 1-10: 1-15: 1-80, and a proper amount of safener pyracloquinate is added for improving the safety performance of the product. The invention has reasonable components, better control effect than the activity of each component used independently, synergistic effect, enlarged weed control spectrum, reduced application frequency, reduced control cost, slowed weed resistance generation, good safety to crops and accordance with the safety requirement of pesticide preparations.)

1. A wheat field herbicide composition comprises active ingredients, a safener, an auxiliary agent, a solvent or a carrier, and is characterized in that: the weight ratio of the active ingredients of the metsulfuron-methyl, the florasulam and the methoxone isooctyl ester is 0.1-20: 0.1-30: 1-60, and the safener is mefenpyr-diethyl.

2. The pesticide composition as set forth in claim 1, wherein the weight ratio of mesosulfuron-methyl, florasulam and methoxone isooctyl is 1-10: 1-15: 1-55.

3. The pesticidal composition according to claim 1 or 2, characterized in that: the cumulative amount of the mesosulfuron, the florasulam and the methoxone isooctyl accounts for 2 to 80 percent of the total weight of the pesticide composition.

4. The pesticidal composition according to claim 3, characterized in that: the cumulative amount of the mesosulfuron, the florasulam and the methoxone isooctyl accounts for 5 to 60 percent of the total weight of the pesticide composition.

5. The pesticidal composition according to claim 1 or 4, characterized in that: the pesticide composition comprises the following active components, an auxiliary agent, a solvent or a carrier in percentage by weight: 5-60% of active component and 5-20% of auxiliary agent; 10% -75% of solvent or carrier.

6. The pesticide composition as set forth in claim 1, wherein the adjuvant is: one or more of an emulsifier, a synergist, a stabilizer, a dispersant, a wetting agent, a penetrating agent, an antifreezing agent and a spreader; the emulsifier is a monomer or a compound preparation of a nonionic, cationic or anionic surfactant, wherein the nonionic surfactant is selected from one or a combination of more than two of alkylphenol polyoxyethylene ether, phenethylphenol polyoxyethylene ether (600 #), alkylphenol polyoxypropylene ether, benzyl phenol polyoxyethylene ether, phenethyl polyoxyethylene polyoxypropylene ether, fatty acid ethylene oxide ester, sorbitan fatty acid ester and sorbitan fatty acid ester polyoxyethylene ether; the cationic surfactant is selected from one or more of fatty amine salt, fatty primary amine salt and fatty secondary amine salt; the anionic surfactant is selected from one or more of calcium dodecyl benzene sulfonate, calcium alkyl sulfonate, fatty alcohol-polyoxyethylene ether calcium sulfate, phenethyl phenol polyoxyethylene ether sulfate, alkyl polyoxyethylene ether phosphate, alkyl naphthalene sulfonate and sodium dodecyl sulfate (k 12); the synergist is one or the combination of more than two of methylated and ethylated vegetable oil; the penetrating agent is selected from one or the combination of more than two of azone, thiazone and organosilicon.

7. The pesticide composition as set forth in claim 1, wherein the solvent is one or a combination of two or more of toluene, xylene, dimethyl sulfoxide, acetone, dimethylformamide, butanone, cyclohexanone, pyrrolidone, methanol, isopropanol, butanol, ethylene glycol, ethyl acetate, butyl acetate, acetonitrile, tetrahydrofuran, engine oil, vegetable oil and methyl oleate; the carrier is one or the combination of more than two of water, bentonite, organic bentonite, diatomite, kaolin, talc, clay, mica, zeolite, pyrophyllite, white carbon black and light calcium carbonate.

8. The pesticidal composition according to claim 1, characterized in that: the composition may be formulated into any agriculturally acceptable dosage form.

9. The pesticidal herbicide according to claim 1, wherein the pesticidal herbicide is a dispersible granule, an oil suspension, a water suspoemulsion or a wettable powder.

10. The pesticide composition as set forth in claim 1, wherein the ratio of the principal component mesosulfuron to the safener pyracloquintocet-mexyl is 1:3.

Technical Field

The invention relates to a pesticide composition, in particular to a herbicide composition for wheat field weeding, which is a ternary herbicide mixture comprising active ingredients of mesosulfuron-methyl, florasulam and methoxone isooctyl, and in addition, in order to increase the product safety, a safener of pyracloquintocet-mexyl is added. Belongs to the field of pesticides.

Background

With the modern development of agriculture, a series of products such as pesticides, bactericides, herbicides and the like are widely applied, wherein the most popular pesticide product is the herbicide, and the quantity of the herbicide sold is always the top in the pesticide. At present, the market has multiple herbicides, the application technology requirement is high, and the problems of phytotoxicity, poor weeding effect and the like can occur if the herbicides are applied carelessly. Improper selection of herbicides will directly affect the safety risk or yield of the human or seedling plants. With the development of weeding technology and the continuous emergence of herbicides, many weeds in farmlands have enhanced resistance and become increasingly difficult to kill. The invention discloses a novel efficient herbicide.

The mesosulfuron belongs to sulfonylurea high-efficiency herbicide, and has the following English name: mesosulfuron-methyl, the chemical structural formula of which is:

the methyldisulfuron is mainly absorbed by stems and leaves of plants, is conducted through phloem and xylem, and is absorbed by soil in a small amount to inhibit the activity of acetolactate synthase in sensitive plants, so that the synthesis of branched-chain amino acid is hindered, the cell division is inhibited, and the sensitive plants die. Generally, after 2-4 hours of application, the absorption amount of sensitive weeds reaches a peak, growth stops after 2 days, leaves begin to yellow after 4-7 days, and then the sensitive weeds die after 2-4 weeks. Is suitable for being used in soft type and semi-hard type winter wheat varieties. Can prevent and kill off alopecurus, wild oat, club grass, bluegrass, stiff grass, common Cymbopogon root, lolium multiflorum, poison wheat, bromus, Conyza sativa, jiejia, crowndaisy chrysanthemum, agropyron cristatum, shepherd's purse, descurainia sophia, caraway and self-grown rape.

Pyraclofen-ethyl is a novel herbicide safener published by the British plant protection conference in 1999, is a pyrazole antidote developed by the Andate company, and can be mixed with mesosulfuron to prevent wheat and the like from being harmed by pesticides. At present, the herbicide for preventing and treating gramineous weeds in wheat fields in China is seriously deficient, for example, the herbicide for specifically preventing and treating arthroncus wheat only has mesosulfuron-methyl, but the risk of phytotoxicity of the mesosulfuron-methyl to wheat is high, normally, mefenpyr-diethyl is added into the herbicide to be used as a safety agent, and the two herbicides are mixed and sprayed to protect the wheat and keep the weeding effect.

Florasulam is a triazolopyrimidine sulfonamide herbicide developed by dow agricultural science, usa. Is a new high-efficiency herbicide variety with triazolopyrimidine sulfamide as a parent compound. The English name is florasulam, and the chemical structural formula is as follows:

the florasulam is a systemic conduction type herbicide and can be conducted to the whole weed, so that the weed can be thoroughly killed without relapse. The effect is stable at low temperature, and the stable effect can be ensured even at 2 ℃, which is incomparable with other herbicides. Is used for preventing and killing broadleaf weeds in wheat fields. The florasulam has a wide herbicidal spectrum, can prevent and kill most broad-leaved weeds in wheat fields, including cleavers, maijiagong and other weeds which are difficult to prevent and kill, and has a very good inhibiting effect on euphorbia helioscopia which is the most difficult to prevent and kill in the wheat fields.

The methoxone isooctyl ester is a phenoxy acetic acid selective hormone type herbicide, is easy to be absorbed by roots and leaves, and is mainly used for preventing and removing various annual and perennial broadleaf weeds after wheat seedlings.

In the actual use process, the mesosulfuron-methyl has good effect on grassy weeds, only can prevent and remove part of broad-leaved weeds, and has poor effect on most of broad-leaved weeds; the florasulam is mainly used for preventing and removing broadleaf weeds and has poor effect on gramineous weeds, and the metoclopramide is mainly used for preventing and removing broadleaf weeds and has good effect on perennial broadleaf weeds. The three herbicides have own weeding characteristics, and the reasonable mixing of the mesosulfuron-methyl, the florasulam and the methoxone isooctyl ester has the effects of expanding a weeding spectrum, reducing the application times and reducing the control cost.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the pesticide composition which is high in weed control efficiency and difficult to generate drug resistance, the pesticide composition is a compound preparation of mesosulfuron-methyl, florasulam and methoxone isooctyl ester, can be used for preventing and removing weeds in a wheat field, remarkably improves the weeding efficiency, and has the characteristics of high efficiency, economy, safety and the like.

The invention provides the use of the composition in preventing and killing weeds in a wheat field, and in order to overcome the defect of the existing single preparation, the invention discloses a wheat field weeding composition which consists of active components, an auxiliary agent, a solvent or a carrier, wherein the active components comprise:

(1) mesosulfuron-methyl

(2) Florasulam

(3) Dimethyl tetrachloro isooctyl ester

The weight ratio of the three components is 0.1-20: 0.1-30: 1-60, and is further optimized to be 1-10: 1-15: 1-80.

The auxiliary agent is as follows: one or more of an emulsifier, a synergist, a stabilizer, a dispersant, a wetting agent, a penetrant, an antifreezing agent and a spreader.

The safener is mefenpyr-diethyl, and the ratio of the mesosulfuron-methyl to the mefenpyr-diethyl is 1:3.

The emulsifier is a monomer or compound preparation of a nonionic, cationic or anionic surfactant, wherein the nonionic surfactant comprises: alkylphenol ethoxylates, phenethylphenol ethoxylates (600 #), alkylphenol polyoxypropylene ethers, benzyl phenol polyoxyethylene ethers, phenethyl polyoxyethylene polyoxypropylene ethers, fatty acid ethylene oxide esters, sorbitan fatty acid ester polyoxyethylene ethers, and the like; the cationic surfactant includes: fatty amine salts, primary fatty amine salts, secondary fatty amine salts, and the like; anionic surfactants include: calcium dodecylbenzene sulfonate, calcium alkyl sulfonate, fatty alcohol-polyoxyethylene ether calcium sulfate, phenethyl phenol polyoxyethylene ether sulfate, alkyl polyoxyethylene ether phosphate, alkyl naphthalene sulfonate, sodium dodecyl sulfate (k 12), and the like.

The synergist comprises methylated or ethylated vegetable oil; the penetrant comprises azone, thiaketone or organosilicon.

The solvent is as follows: one or two of toluene, xylene, dimethyl sulfoxide, acetone, dimethylformamide, butanone, cyclohexanone, pyrrolidone, methanol, isopropanol, butanol, ethylene glycol, ethyl acetate, butyl acetate, acetonitrile, tetrahydrofuran, engine oil, vegetable oil and methyl oleate.

The carrier is as follows: one or more of water, bentonite, organic bentonite, diatomite, kaolin, talc, clay, mica, zeolite, pyrophyllite, white carbon black and light calcium carbonate.

The invention also discloses a pesticide herbicide containing the pesticide composition. The herbicidal pesticide composition for wheat fields can be processed into dispersible granules, water suspension emulsion, oil suspension or wettable powder by adopting a method which is commonly used in the field.

The wettable powder is prepared by adsorbing crude oil with white carbon black, mixing with other components, an auxiliary agent and a synergist, and then carrying out air flow crushing to obtain a wettable powder product.

The dispersible granule is prepared by adsorbing crude oil with white carbon black, mixing with other components, an auxiliary agent and a synergist, and then performing jet milling and re-granulation to obtain the dispersible granule product.

The preparation method of the water suspension emulsion comprises mixing liquid raw medicine and emulsifier to obtain mother liquor, sanding solid raw medicine, adjuvant and other components to obtain water suspension, adding the mother liquor into the water suspension under shearing condition, and shearing uniformly to obtain the water suspension emulsion product.

Preparation of oil suspending agent: mixing solid original medicine with vegetable oil, crude oil, emulsifier, safener and synergist, and sanding to obtain oil suspension

The invention also discloses application of the pesticide composition or the pesticide herbicide containing the pesticide composition in farmland weeding. After the mesosulfuron, the florasulam and the methoxone isooctyl are compounded, the advantages can be complemented, the weeding spectrum is expanded, the weeding effect is improved, and an obvious synergistic effect is also shown; meanwhile, the safety to wheat is good. The pesticide composition has better control effect on gramineous weeds and broadleaf weeds in wheat fields than that of each pesticide used independently and the existing pesticide compound preparation, embodies obvious synergistic action, has good effect on alopecurus, wild oats, club grass, bluegrass, stiff grass, common fescue, lolium multiflorum, poison wheat, brome, candle grass, festival wheat, crowndaisy grass, wheatgrass, shepherd's purse, descurainia sophia and the like, and also has good control effect on field weeds, cleavers and malpigweed in fields which are difficult to remove. Meanwhile, the pesticide composition is easy to degrade, safe to wheat and free of side effect; the residual period in soil is short, and the fertilizer is safe for the succeeding crops. The combined use of the three active ingredients further reduces the phytotoxicity of each pesticide to crops.

The pesticide composition can effectively solve the problem of preventing and removing the malignant weeds in the wheat fields, and the traditional pesticide generates resistance to the weeds after being used for a long time, so that the dosage is greatly increased, the burden of farmers is increased, and the environmental pollution is also increased. The reasonable combination of the three components effectively solves the problem of weed resistance and reduces the dosage. Compared with the prior art, the method has the following outstanding beneficial effects:

1. broad spectrum and high effect on preventing and eliminating malignant weeds. The three pesticide active ingredients are jointly used, so that the weed control spectrum of the pesticide composition is further expanded, the three pesticide active ingredients have obvious synergistic effect on preventing and treating gramineous weeds and broadleaf weeds, and the effect of preventing and treating weeds is good especially on malignant weeds which are difficult to prevent and treat.

2. Has high safety to crops. The pesticide composition is easy to degrade, safe to wheat and free of side effect; the residual period in soil is short, and the fertilizer is safe for the succeeding crops. The combined use of the three active ingredients further reduces the phytotoxicity of each pesticide to crops.

3. The prevention and treatment effect is durable, and the weeds are not easy to generate drug resistance. The three active ingredients are used together, and the active ingredients have different action characteristics, so that the weeds are not easy to generate drug resistance, and the pesticide composition has excellent effect of secondary killing or multi-time killing and preventing of the weeds. Meanwhile, the long-acting control effect of the pesticide after combined use is obviously prolonged, and the succession of weed communities is delayed.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention.