A herbicidal composition and its application

Abstract

The present invention relates to a herbicidal composition and its application, and relates to the field of pesticides. The active ingredients include flumioxazin, S-metolachlor, and terbuthylazine. The weight ratio of flumioxazin, S-metolachlor, and terbuthylazine is 1:(0.1-20):(0.1-20), optionally 1:(3-20):(3-20), optionally 1:(5-10):(5-10), and optionally 1:(5.7-7):(6-7.3). The compound agent of flumioxazin, S-metolachlor, and terbuthylazine in the present invention has a synergistic effect, can improve the control effect, and can control a variety of different types of plant weed pests that occur in combination, thereby reducing the amount of medicine used, saving costs, and improving environmental safety.

Description

Technical Field

[0001] The present invention relates to the field of pesticides, and in particular to a herbicidal composition and application thereof. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] Flumioxazin is commonly known in English as flumioxazin, and its chemical name is 2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-propynyl)-2H-1,4-benzoxazin-6-yl]-4,5,6,7-tetrahydro-1H-isoindole-1,3(2H)-dione. Its molecular formula is C 19 H 15 FN2O4, relative molecular weight: 354.33, CAS number 103361-09-7, structural formula as shown in formula 1:

[0004]

[0005] The common name of S-metolachlor is s-metolachlor, chemical name: (aRS,1S)-2-chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)acetyl-o-toluidine, molecular formula C 15 H 22 ClNO2, relative molecular weight: 283.8, CAS No. 178961-20-1, its structural formula is as shown in Formula 2:

[0006]

[0007] The common name of terbutylazine in English is terbutylazine, and its chemical name is: N2-tert-butyl-6-chloro-N4-ethyl-1,3,5-triazine-2,4-diamine, with the molecular formula C9H 16 ClN5, relative molecular weight: 229.7, CAS number 5915-41-3, structural formula is as follows:

[0008]

[0009] In agricultural production practice, there is often a problem of mixed occurrence of different types of weed pests, including grass weeds such as barnyard grass, foxtail grass, crabgrass, and goosegrass in farmland, and broad-leaved weeds such as dayflower, Amaranthus retroflexus, quinoa, purslane, Amaranthus chinensis, Polygonum multiflorum, and quinoa.

[0010] Current weed control not only has poor control effects, but is also prone to drug resistance. Different herbicides must be used for different weed pests, which consumes a lot of manpower, material and financial resources, and causes environmental pollution. Continuous use of herbicides with a single active ingredient can easily lead to drug resistance.

[0011] In view of this, the present invention is proposed. Summary of the Invention

[0012] Purpose of the Invention

[0013] The present invention aims to provide a herbicidal composition and its application. The compound agent of fluazifop-propyl, metolachlor-S and terbuthylazine in the present invention has a synergistic effect, which can improve the control effect; it can control a variety of different types of plant weed pests that occur in a mixed state, thereby reducing the amount of medicine used, saving costs and improving environmental safety.

[0014] Solution

[0015] To achieve the purpose of the present invention, an embodiment of the present invention provides a herbicidal composition, the active ingredients of which include fluazifop-propyl, metolachlor-S and terbuthylazine, and the weight ratio of fluazifop-propyl, metolachlor-S and terbuthylazine is 1:(0.1~20):(0.1~20).

[0016] Furthermore, the weight ratio of fluazifop-propyl, metolachlor and terbuthylazine, fluazifop-propyl, metolachlor and terbuthylazine is 1:(3-20):(3-20), optionally 1:(5-10):(5-10), optionally 1:(5.7-7):(6-7.3), optionally 1:5:5, 1:5:10, 1:10:5, 1:10:10, 1:5.7:7.3, 1:6:7, or 1:7:6.

[0017] Furthermore, the active ingredient accounts for 1 to 99% of the total weight of the composition, optionally 5 to 70%, optionally 10 to 50%, optionally 40 to 50%, optionally 42%.

[0018] Furthermore, it also includes an auxiliary agent, and the weight ratio of the active ingredient to the auxiliary agent is 1: (0.1-90), and optionally 1: (0.5-20).

[0019] Furthermore, the auxiliary agent is selected from one or more of a safener, a dispersant, a wetting agent, an emulsifier, a solvent, a cosolvent, an antifreeze agent, a stabilizer, a preservative, a thickener, a binder, a defoamer, a wall material, an acid-adjusting medium, an alkali-adjusting medium and a solid inert carrier;

[0020] Optionally, the safener is selected from one or both of chlorpyrifos and cloquintocet-mexyl, and is optionally chlorpyrifos-mexyl.

[0021] Optionally, the dispersant is selected from one or more of alkylnaphthalene sulfonates, alkylbenzene sulfonic acid calcium salts, fatty amine polyoxyethylene ethers, alkylphenol polyoxyethylene ethers, arylphenol polyoxyethylene succinate sulfonates, octylphenol polyoxyethylene ether sulfates, polycarboxylates, lignin sulfonic acid sodium salts, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, fatty acid polyoxyethylene esters and ester polyoxyethylene ethers, preferably one or more of arylphenol polyoxyethylene succinate sulfonates, polycarboxylates and lignin sulfonic acid sodium salts.

[0022] Optionally, the wetting agent is selected from one or more of sodium lauryl sulfate, sodium dodecylbenzenesulfonate, Nongru 2000# series, and sodium lauryl sulfate; preferably one or more of sodium lauryl sulfate and sodium dodecylbenzenesulfonate.

[0023] Optionally, the emulsifier is one or more of a cationic surfactant, an anionic surfactant, a nonionic surfactant and a zwitterionic surfactant. Optionally, the emulsifier is selected from one or more of polyethylene glycol fatty acid esters, calcium dodecylbenzenesulfonate, sodium succinate sulfonate, sorbitan monooleate, sorbitan monostearate, benzylphenol polyoxyethylene ether phosphate, sorbitan trioleate, sorbitan tristearate, polyethylene glycol monostearate, sorbitan sesquioleate, sorbitan monolaurate, polyoxyethylene lauryl ether, fatty alcohol polyoxyethylene ether, fatty amine polyoxyethylene ether, polyoxyethylene lauryl ether, sorbitan polyoxyethylene ether, polyoxyethylene sorbitan ether monooleate; optionally, the emulsifier is selected from one or more of polyethylene glycol fatty acid esters, sorbitan trioleate and sorbitan tristearate.

[0024] Optionally, the solvent is selected from one or more of methanol, ethanol, propanol, isopropanol, n-butanol, tert-butanol, ethylene glycol monomethyl ether, sorbitol, dichloromethane, aromatic hydrocarbon solvent oil and methyl oleate, preferably one or more of aromatic hydrocarbon solvent oil and dichloromethane.

[0025] Optionally, the cosolvent is selected from one or more of dimethyl sulfoxide, N-methylpyrrolidone, sulfolane and ethyl acetate;

[0026] Optionally, the antifreeze agent is selected from one or more of ethylene glycol, 1,2-propylene glycol, glycerol and urea, preferably ethylene glycol.

[0027] Optionally, the binder is selected from one or more of starch, gypsum, glucose, and polyvinyl alcohol, preferably starch.

[0028] Optionally, the thickener is selected from one or more of magnesium aluminum silicate, xanthan gum, and polyethylene glycol, preferably one or more of magnesium aluminum silicate and xanthan gum.

[0029] Optionally, the solid inert carrier is selected from one or more of clay, diatomaceous earth, kaolin, and light calcium carbonate, preferably one or more of kaolin and diatomaceous earth.

[0030] Optionally, the defoaming agent is selected from one or more of organosilicon, C8-10 fatty alcohol, C10-20 saturated fatty acid (such as capric acid), amide, silicone oil and silicone compound. Preferably, the organosilicon defoaming agent is selected.

[0031] Optionally, the wall material is selected from one or more of polyureas, polyurethanes, melamine resins, and mixed polyurea / polyamides, polyamides, and urea / formaldehydes, preferably polyamides.

[0032] Optionally, the acid-adjusting medium is selected from one or more of ammonium sulfate, ammonium nitrate, hydrochloric acid, and acetic acid.

[0033] Optionally, the alkali adjusting medium is selected from one or more of ammonia water, sodium hydroxide and triethanolamine.

[0034] Optionally, the preservative is selected from sodium benzoate and / or kason, preferably sodium benzoate.

[0035] The stabilizer may be any substance commonly used in the art, which is well known to those skilled in the art and will not be described in detail here.

[0036] The herbicidal composition of the present invention can be provided in the form of a finished product, that is, the components in the composition are already mixed; or each component can be provided in the form of a separate formulation and directly tank-mixed when used.

[0037] Furthermore, the herbicidal composition is in the form of one or more of microcapsule suspension-suspension concentrate, suspoemulsion, aqueous emulsion, microemulsion, soluble concentrate, wettable powder or water dispersible granules.

[0038] There are no special requirements for the other ingredients and their contents in the above-mentioned dosage forms except the active ingredient, and the content of the active ingredient. Conventional proportions in the art can be used, for example:

[0039] Furthermore, the formulation of the herbicidal composition is a microcapsule suspension-suspension concentrate, and optionally the microcapsule suspension-suspension concentrate contains 5-50wt% of pesticide active ingredients, 1-10wt% of wall material, 0.1-2wt% of safener, 0.5-10wt% of dispersant, 0.5-5wt% of wetting agent, 3-15wt% of emulsifier, 0-20wt% of solvent, 0.1-5wt% of antifreeze, 0-2wt% of stabilizer, 0-2wt% of preservative, 0-2wt% of thickener, 0-10wt% of antifreeze, 0-2wt% of acid adjustment medium, 0-2wt% of alkali adjustment medium, and the balance is water; optionally, the weight fraction of free pesticide effective active ingredients is less than 10% of the weight fraction of microcapsule active ingredients; optionally, ... t% of pesticide active ingredient, safener 0.6wt%, dispersant 3wt%, wetting agent 2wt%, emulsifier 5wt%, solvent 10wt%, wall material 2wt%, thickener 0.6wt%, defoamer 0.2wt%, antifreeze agent 4wt%, preservative 0.2wt%, and the balance is water; optionally, the microcapsule suspension-suspension concentrate contains 5-50wt% of pesticide active ingredient, chlorpyrifos 0.6wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 4wt%, sodium benzoate 0.2wt%, and the balance is water.

[0040] Furthermore, the formulation of the herbicidal composition is a suspoemulsion, which optionally contains 3 to 60 wt% active ingredient, 3 to 15 wt% emulsifier, 0.1 to 2 wt% safener, 2 to 10 wt% dispersant, 0 to 20 wt% solvent, 0.1 to 2 wt% thickener, 0.1 to 8 wt% antifreeze, 0.05 to 3 wt% stabilizer, 0.2 to 1 wt% defoamer, and the balance is water; optionally, the suspoemulsion contains 3 to 60 wt% active ingredient, 3 to 15 wt% emulsifier, 0.1 to 2 wt% safener, 2 to 10 wt% dispersant, 0 to 20 wt% solvent, 0.1 to 2 wt% thickener, 0.1 to 8 wt% antifreeze, 0.05 to 3 wt% stabilizer, 0.2 to 1 wt% defoamer, and the balance is water; The active ingredient comprises 0.6 wt% of a safener, 5 wt% of a dispersant, 10 wt% of a solvent, 5 wt% of an emulsifier, 0.2 wt% of a defoamer, 5 wt% of an antifreeze agent, and the balance is water; optionally, the suspoemulsion comprises 3 to 60 wt% of an active ingredient, 0.6 wt% of chlorpyrifos, 5 wt% of a polycarboxylate, 10 wt% of an aromatic hydrocarbon solvent oil, 5 wt% of anhydrous sorbitan tristearate, 0.2 wt% of an organosilicon defoamer, 5 wt% of ethylene glycol, and the balance is water.

[0041] Furthermore, the formulation of the herbicidal composition is an aqueous emulsion. Optionally, the aqueous emulsion contains 5-60wt% active ingredient, 0.1-2wt% safener, 10-50wt% solvent, 3-20wt% emulsifier, 2-6wt% antifreeze, 0.1-1wt% defoamer, and the balance is water; optionally, the aqueous emulsion contains 5-60wt% active ingredient, 0.6wt% safener, 10wt% emulsifier, 10wt% solvent, 0.2wt% defoamer, 5wt% antifreeze, and the balance is water; optionally, the aqueous emulsion contains 5-60wt% active ingredient, 0.6wt% chlorpyrifos, 10wt% sorbitan tristearate, 10wt% aromatic hydrocarbon solvent oil, 0.2wt% silicone defoamer, 5wt% ethylene glycol, and the balance is water.

[0042] Furthermore, the formulation of the herbicidal composition is a microemulsion. Optionally, the microemulsion contains 5-60wt% active ingredient, 5-25wt% emulsifier, 0.1-2wt% safener, 0.5-5wt% antifreeze, 0-10wt% cosolvent, 0-10wt% stabilizer, 0-10wt% preservative, etc., and the balance is water; optionally, the microemulsion contains 5-60wt% active ingredient, 0.6wt% safener, 20wt% emulsifier, 10wt% solvent, 5wt% antifreeze, and the balance is water; optionally, the microemulsion contains 5-60wt% active ingredient, 0.6wt% of chlorpyrifos, 20wt% of sorbitan tristearate, 10wt% of aromatic hydrocarbon solvent oil, 5wt% of ethylene glycol, and the balance is water.

[0043] Furthermore, the formulation of the herbicidal composition is a soluble solution, which optionally contains 5-60wt% active ingredient, 5-25wt% emulsifier, 0.1-2wt% safener, 0-5wt% antifreeze, 0-10wt% cosolvent, 0-10wt% stabilizer, 0-10wt% preservative, and the balance is solvent; optionally, the soluble solution contains 5-60wt% active ingredient, 0.6wt% safener, 10wt% emulsifier, 10wt% water, and the balance is solvent; optionally, the soluble solution contains 5-60wt% active ingredient, 0.6wt% chlorpyrifos, 10wt% sorbitan tristearate, 10wt% ethylene glycol monomethyl ether, 10wt% water, and the balance is isopropyl alcohol.

[0044] Furthermore, the formulation of the herbicidal composition is a wettable powder. Optionally, the wettable powder contains 3-70 wt% of active ingredient, 0.1-2 wt% of safener, 0.5-10 wt% of dispersant, 0.5-5 wt% of wetting agent, 0-10 wt% of defoamer, 0-10 wt% of stabilizer, and the balance is a solid inert carrier; optionally, the wettable powder contains 3-70 wt% of active ingredient, 0.6 wt% of safener, 5 wt% of dispersant, 3 wt% of wetting agent, 0.2 wt% of defoamer, and the balance is a solid inert carrier; optionally, the wettable powder contains 3-70 wt% of active ingredient, 0.6 wt% of chlorpyrifos, 5 wt% of polycarboxylate, 3 wt% of sodium lauryl sulfate, 0.2 wt% of silicone defoamer, and the balance is kaolin.

[0045] Furthermore, the formulation of the herbicidal composition is water-dispersible granules. Optionally, the water-dispersible granules contain 3-70 wt% of active ingredient, 0.1-2 wt% of safener, 0.5-10 wt% of dispersant, 0.5-5 wt% of wetting agent, 0-10 wt% of stabilizer, 0-10 wt% of binder, and the balance is a solid inert carrier; optionally, the water-dispersible granules contain 3-70 wt% of active ingredient, 0.6 wt% of safener, 5 wt% of dispersant, 3 wt% of wetting agent, 0.2 wt% of defoamer, 5 wt% of binder, and the balance is kaolin; optionally, the water-dispersible granules contain 3-70 wt% of active ingredient, 0.6 wt% of chlorpyrifos, 5 wt% of polycarboxylate, 3 wt% of sodium lauryl sulfate, 0.2 wt% of organosilicon defoamer, 5 wt% of starch, and the balance is kaolin. Water-dispersible granules are usually made into 10-100 mesh international standard sieve (1676-152 μm) particles, and can be prepared by spray granulation, extrusion granulation, high-speed rotary granulation, fluidized bed granulation and other methods.

[0046] In the present invention, there are no special requirements for the preparation methods of various dosage forms, and various methods known in the art can be used, which will not be described in detail here.

[0047] On the other hand, the present invention provides a use of the herbicidal composition in soil sealing treatment before sowing crops.

[0048] On the other hand, the present invention provides a use of the herbicidal composition in preventing and controlling weed pests in farmland; optionally, the plant weed pests include grass weeds and / or broadleaf weeds; optionally, the grass weeds include one or more of barnyard grass, foxtail grass, crabgrass, and goosegrass; optionally, the broadleaf weeds include one or more of dayflower, Amaranthus retroflexus, Chenopodium album, Purslane, Amaranthus chinensis, Polygonum multiflorum, and Chenopodium album.

[0049] On the other hand, a method for using the pesticide herbicide composition is provided, characterized in that the application amount of the active ingredient of the herbicide composition is 30 to 60 g of active ingredient per mu, and optionally, the application method is spraying.

[0050] The herbicide of the present invention can be diluted according to actual needs when used in practice, and the diluted herbicide can be sprayed on the soil before sowing.

[0051] Beneficial effects

[0052] The herbicidal composition of the present invention has a significant synergistic effect compared with single-component fluazifop-propyl, S-metolachlor and terbuthylazine; two-component fluazifop-propyl and S-metolachlor, S-metolachlor and terbuthylazine, fluazifop-propyl and terbuthylazine; or herbicidal compositions with other components, thereby improving the control effect; and can control a variety of different types of plant weed pests occurring in combination, thereby reducing the amount of medicine used, saving costs, and improving environmental safety. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise expressly stated, throughout the specification and claims, the term "including" or its variations such as "comprising" or "including" will be understood to include the stated elements or components, without excluding other elements or other components.

[0054] In addition, in order to better illustrate the present invention, numerous specific details are provided in the following detailed description. It should be understood by those skilled in the art that the present invention can be practiced without certain specific details. In some embodiments, raw materials, components, methods, means, etc. that are well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present invention.

[0055] In the following examples, all raw materials are commercially available products.

[0056] The herbicidal composition of the embodiment of the present invention is a pre-sowing soil sealing treatment agent, which contains active ingredients of fluazifop-butyl, isopropylamine and terbuthylazine. Fluazifop-butyl belongs to the cyclic imide low-toxic herbicide, which is absorbed by young shoots and leaves. It can effectively prevent and control annual broad-leaved weeds and some grass weeds when used as soil treatment. It is easily degraded in the environment and is safe for subsequent crops. Isopropylamine belongs to the chloroacetamide herbicide, which is a selective pre-emergence herbicide. It is mainly used for corn, soybeans, peanuts, and sugarcane. It can also be used for crops such as cotton, rapeseed, potatoes, onions, peppers, and cabbage in non-sandy soils to prevent and control annual weeds and certain broad-leaved weeds. It is used for soil surface treatment before germination. Terbuthylazine belongs to the triazine herbicide, which is mainly absorbed by the roots of plants and is used to prevent and control most weeds. The combination of the three types of herbicides has a significant synergistic effect, which can improve the prevention and control effect, reduce the dosage, prolong the efficacy period, and is used to treat a variety of different types of plant weed pests that occur in combination.

[0057] There are no special requirements for the preparation methods of the dosage forms in the following examples. Various methods known in the art can be used and will not be described in detail here.

[0058] Example 1 (the weight ratio of fluazifop-propyl, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0059] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0060] Flumioxazin 3wt%, metolachlor-S 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 4wt%, sodium benzoate 0.2wt%, water to 100wt%.

[0061] Example 2 (the weight ratio of flumioxazin, S-metolachlor and terbuthylazine is 3:18:21 (i.e., 1:6:7))

[0062] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0063] Flumioxazin 3wt%, isopropylamine 18wt%, terbuthylazine 21wt%, chlorpyrifos 0.6wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 4wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0064] Example 3 (the weight ratio of flumioxazin, S-metolachlor and terbuthylazine is 3:21:18 (i.e., 1:7:6))

[0065] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0066] Flumioxazin 3wt%, isopropylamine 21wt%, terbuthylazine 18wt%, chlorpyrifos 0.7wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0067] Example 4 (the weight ratio of flumioxazin, S-metolachlor and terbuthylazine is 5:15:22 (i.e., 1:3:4.4))

[0068] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0069] Flumioxazin 5wt%, metolachlor-S 15wt%, terbuthylazine 22wt%, chlorpyrifos 0.5wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, and water is added to 100wt%.

[0070] Example 5 (the weight ratio of fluazifop-propyl, S-metolachlor and terbuthylazine is 1.5:19.5:21 (i.e., 1:13:14))

[0071] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0072] Flumioxazin 1.5wt%, metolachlor-S 19.5wt%, terbuthylazine 21wt%, chlorpyrifos 0.7wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0073] Example 6 (the weight ratio of fluazifop-propyl, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0074] 42% suspoemulsion of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0075] Flumioxazin 3wt%, metolachlor-S 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 5wt%, aromatic hydrocarbon solvent oil 10wt%, sorbitan tristearate 5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, and water to 100wt%.

[0076] Example 7 (the weight ratio of fluazifop-propyl, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0077] 42% emulsion in water of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0078] Flumioxazin 3wt%, metolachlor-S 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, sorbitan tristearate 10wt%, aromatic hydrocarbon solvent oil 10wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, and water to 100wt%.

[0079] Example 8 (the weight ratio of fluazifop-propyl, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0080] 42% microemulsion of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0081] 3wt% of fluazifop-propyl, 17wt% of metolachlor-S, 22wt% of terbuthion, 0.6wt% of chlorpyrifos, 20wt% of sorbitan tristearate, 10wt% of aromatic hydrocarbon solvent oil, 5wt% of ethylene glycol, and water to 100wt%.

[0082] Example 9 (the weight ratio of fluazifop-propyl, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0083] 42% soluble concentrate of fluazifop-propyl, S-metolachlor and terbuthylazine

[0084] Flumioxazin 3wt%, metolachlor-S 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, sorbitan tristearate 10wt%, ethylene glycol monomethyl ether 10wt%, water 10wt%, and isopropyl alcohol are added to 100wt%.

[0085] Example 10 (the weight ratio of flumioxazin, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0086] 42% wettable powder of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0087] Flumioxazin 3wt%, metolachlor-S 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 5wt%, sodium lauryl sulfate 3wt%, organosilicon defoamer 0.2wt%, kaolin is added to 100wt%.

[0088] Example 11 (the weight ratio of flumioxazin, S-metolachlor and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0089] 42% water dispersible granules of fluazifop-propyl, S-isopropylamine and terbuthylazine

[0090] Flumioxazin 3wt%, metolachlor-S 17wt%, terbuthion 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 5wt%, sodium lauryl sulfate 3wt%, silicone defoamer 0.2wt%, starch 5wt%, and kaolin are added to 100wt%.

[0091] Comparative Example 1 42% fluazifop-butyl suspension concentrate

[0092] Flumioxazin 42wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0093] Comparative Example 2 42% S-Isopropylamine Microcapsule Suspension

[0094] S-isopropylamine 42wt%, polycarboxylate 3wt%, chlorpyrifos 1.4wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0095] Comparative Example 3 42% terbuthylazine suspension

[0096] Terbuthylazine 42wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0097] Comparative Example 4 (the weight ratio of fluazifop-propyl to metolachlor is 6:36 (i.e., 1:6))

[0098] 42% fluazifop-propyl and metolachlor-S-microcapsule suspension-suspension concentrate

[0099] Flumioxazin 6wt%, metolachlor-S 36wt%, chlorpyrifos 1.2wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0100] Comparative Example 5 (the weight ratio of terbuthylazine to S-metolachlor is 21:21 (i.e., 1:1))

[0101] 42% S-Isopropylamine and Terbuthylazine Microcapsule Suspension-Suspension Concentrate

[0102] Terbuthylazine 21wt%, metolachlor S 21wt%, chlorpyrifos 0.7wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0103] Comparative Example 6 (the weight ratio of fluazifop-propyl to terbuthylazine is 6:36 (i.e., 1:6))

[0104] 42% fluazifop-propyl and terbuthylazine suspension concentrate

[0105] Flumioxazin 6wt%, terbuthylazine 36wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0106] Comparative Example 7 (the weight ratio of fluazifop-propyl, metolachlor-S and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0107] 42% microcapsule suspension-suspension concentrate of oxadiazon, S-metolachlor and terbuthylazine

[0108] Oxadiazole 3wt%, metolachlor S 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, water is added to 100wt%.

[0109] Comparative Example 8 (the weight ratio of fluazifop-propyl, metolachlor-S and terbuthylazine is 3:17:22 (i.e., 1:5.7:7.3))

[0110] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, pretilachlor and terbuthylazine

[0111] Fluamid-pyraclostrobin 3wt%, pretilachlor 17wt%, terbuthylazine 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, and water is added to 100wt%.

[0112] Comparative Example 9 (the weight ratio of fluazifop-propyl, S-metolachlor and atrazine is 3:17:22 (i.e., 1:5.7:7.3))

[0113] 42% microcapsule suspension-suspension concentrate of fluazifop-propyl, S-metolachlor and atrazine

[0114] Flumioxazin 3wt%, metolachlor-S 17wt%, atrazine 22wt%, chlorpyrifos 0.6wt%, polycarboxylate 3wt%, sodium lauryl sulfate 2wt%, sorbitan tristearate 5wt%, aromatic hydrocarbon solvent oil 10wt%, polyamide 2wt%, xanthan gum 0.1wt%, magnesium aluminum silicate 0.5wt%, silicone defoamer 0.2wt%, ethylene glycol 5wt%, sodium benzoate 0.2wt%, and water is added to 100wt%.

[0115] Experimental Example 1

[0116] In the indoor activity determination test, unless otherwise specified, the ratios (including percentages) mentioned below are all mass ratios.

[0117] Objective: To determine the fresh weight control efficacy of fluazifop-propyl, S-isopropylamine, terbuthylazine and their different mixtures against weeds under greenhouse pot conditions, and to evaluate their combined effects, in order to provide a scientific basis for the formulation development of mixed agents and field efficacy trials for pesticide registration.

[0118] Test Method: The test was conducted under greenhouse conditions. Weed seeds of various species were sown in pots, with 25 seeds per pot. The seeds were covered with a 1 cm thick layer of fine soil mixed with sand. Water was added from the bottom of the pot to keep the soil moist, with a moisture content of 25-35%. The weeds were cultured in a lighted incubator. When the weeds emerged and reached 5 cm in height, they were sprayed with a foliage spray. Each treatment was repeated four times, with a control containing no pesticide. After treatment, the test materials were cultured in the greenhouse, and the growth of the target weeds was regularly observed. Thirty days after treatment, the target crops were visually inspected for signs of damage and growth inhibition, and the aboveground fresh weight was measured.

[0119] Test targets: two weeds: crabgrass and purslane.

[0120] Test agents: Fluamid-pyraclostrobin, S-isopropylamine and terbuthion technical drugs were selected and used as single agents of test agents or prepared into compound mixtures in corresponding proportions as needed (the dosages were all the effective ingredient application amounts of the composition per mu of land).

[0121] Evaluation method:

[0122] The fresh weight inhibition rate (%) was calculated.

[0123] Fresh weight inhibition rate P (%) = (control fresh weight - treatment fresh weight) / control fresh weight * 100

[0124] The Gowing method is used to evaluate the combined effect of two herbicides on weeds. The theoretical control effect of the mixed herbicide is calculated according to the following formula:

[0125] E0=X+Y(100-X) / 100

[0126] Wherein, X is the fresh weight inhibition rate of component A on the target weeds when used alone; Y is the fresh weight inhibition rate of component B on the target weeds when used alone; E0 is the theoretical control effect of component A and component B on the target when mixed; E is the actual control effect of component A and component B on the target when mixed. The results are shown in Table 4.

[0127] This application is a combination of three original drugs, and there are four evaluation calculation methods for the combined effect:

[0128] Toxicity index (TTI) = ATI of agent A × percentage of A in the mixture + ATI of agent B × percentage of B in the mixture + ATI of agent C × percentage of C in the mixture;

[0129] The combined effect of three herbicides can be evaluated using the following Gowing equation:

[0130] 1) Theoretical efficacy calculated based on single doses of three technical drugs: E0 = X + Y + Z - [(X*Y + X*Z + Y*Z) / 100] + X*Y*Z / 10000

[0131] 2) Calculation method based on the control effect of the binary mixture + the control effect of another single agent: 1) Theoretical control effect E0 = X' + Y' (100-X') / 100;

[0132] In formula 1), X is the fresh weight inhibition rate of component A on the target weeds when used alone; Y is the fresh weight inhibition rate of component B on the target weeds when used alone; Z is the fresh weight inhibition rate of component C on the target weeds when used alone; E0 is the theoretical control effect of the fresh weight inhibition rate of component A, component B and component C when used together;

[0133] In formula 2), X' is the fresh weight inhibition rate of target weeds when component A (or B or C) is used alone; Y' is the fresh weight inhibition rate of target weeds when components B+C are used in combination (or (A+C) in combination or (A+B) in combination); E0 is the theoretical control effect of fresh weight inhibition rate of target weeds when components A, B and C are used in combination;

[0134] E is the actual protective efficacy of the target when component A, component B and component C are used alone or in combination. The results are shown in Table 1 and Table 2.

[0135] Evaluation criteria: When E-E0>10%, it is indicated as synergistic effect; when E-E0 is between ±10%, it is indicated as additive effect; when E-E0<-10%, it is indicated as antagonistic effect.

[0136] Table 1: Combined toxicity of herbicide combinations to crabgrass (spray method)

[0137]

[0138]

[0139] The results in Table 1 show that the combination of flumioxazin, S-metolachlor, and terbuthylazine exhibits superior control against grass weeds such as crabgrass compared to the individual pesticide components used alone or in combination. At weight ratios of flumioxazin, S-metolachlor, and terbuthylazine of 1:3.3:3.3 and 1:15:20, the E-E0 value was within ±10%. The measured combined control efficacy did not significantly exceed the theoretical efficacy, indicating no significant synergistic effect. However, when the weight ratio of flumioxazin, S-isopropylamine and terbuthylazine is in the range of 1:(5-10):(5-10), E-E0>10%, especially when the ratios are 1:5:5, 1:5:10, 1:10:5 and 1:10:10, the synergism is most obvious, that is, when the weight ratio of flumioxazin, S-isopropylamine and terbuthylazine is in the range of 1:(5-10):(5-10), the actual measured comprehensive control effect is significantly higher than the theoretical control effect by more than 10%, indicating that flumioxazin, S-isopropylamine and terbuthylazine have a significant synergistic effect under the above ratio.

[0140] Table 2: Joint toxicity of herbicide combinations to Portulaca oleracea (spray method)

[0141]

[0142]

[0143]

[0144] The results in Table 2 show that the combination of flumioxazin, S-metolachlor, and terbuthylazine exhibits superior control effectiveness against broadleaf weeds such as purslane compared to the individual pesticide components used alone or in combination. At weight ratios of flumioxazin, S-metolachlor, and terbuthylazine of 1:3.3:3.3 and 1:15:20, the E-E0 value was within ±10%. The measured combined control efficacy did not significantly exceed the theoretical efficacy, indicating no significant synergistic effect. However, at 1:5:5, 1:5:10, 1:10:5, and 1:10:10, E-E0>10%, and the synergism was obvious, indicating that when the weight ratio of fluazifop-butyl, S-isopropylamine and terbuthylazine was in the range of 1:(5-10):(5-10), the actual measured comprehensive control effect was significantly higher than the theoretical control effect, indicating that fluazifop-butyl, S-isopropylamine and terbuthylazine produced obvious synergistic effects under the above ratio.

[0145] Experimental Example 2

[0146] The test was conducted in Harbin, Heilongjiang Province. The plot was flat and had good fertility. After application, corn fields in each treatment area were managed according to conventional production practices.

[0147] Corn fields were sprayed using Examples 1 to 11 and Comparative Examples 1 to 9, respectively. A blank control group (i.e., no corn field was sprayed) was set up. During application, the active ingredient concentration was 0.05 wt % by dilution with water. The diluted formulations were evenly sprayed before sowing, at a rate of 42 g of active ingredient per mu.

[0148] The control efficacy of barnyard grass and plantain was investigated 10, 20, 30, and 50 days after application. Specific test methods were conducted in accordance with the "Guidelines for Pesticide Field Efficacy Tests." Random sampling was performed at five locations within each treatment area to investigate the control efficacy of barnyard grass and plantain. Weed counts were performed 10, 20, 30, and 50 days after application, and the control efficacy was calculated. The results are shown in Table 3:

[0149] Table 3 Field test results of Examples 1 to 11 and Comparative Examples

[0150]

[0151]

[0152] As can be seen from Table 3, by comparing Examples 1-3 and Examples 6-11 with Comparative Examples 1-9, the ternary pesticide composition of flumioxazin, S-metolachlor, and terbuthylazine of the present invention has better control effects and a longer duration of effect than single-ingredient flumioxazin, S-metolachlor, and terbuthylazine; binary combinations of flumioxazin and S-metolachlor, flumioxazin and terbuthylazine, and S-metolachlor and terbuthylazine; or other ternary herbicide combinations. It can control a variety of non-arable land or pre-sowing weeds, reduce the number of pesticide applications, save costs, and reduce environmental pollution.

[0153] As can be seen from Table 3, by comparing Examples 1 to 5, it can be seen that the weight ratio of flumioxazin, S-isopropylamine and terbuthylazine is 1:(1-20):(1-20), especially when the weight ratio of flumioxazin, S-isopropylamine and terbuthylazine is preferably 1:(5.7-7):(6-7.3), the control effect can be effectively improved, especially when the ratios are 1:5.7:7.3, 1:6:7 and 1:7:6, the synergistic effect is obvious, and the control effect can reach more than 90%, which corresponds to the indoor test results.

[0154] As can be seen from Table 3, by comparing Examples 1 to 3 with Examples 6 to 11, it can be seen that the herbicide composition of the present invention, when the preferred formulation is a microcapsule suspension-suspension concentrate, can achieve better control effects and prolong the duration of efficacy compared to other formulations.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A herbicidal composition, characterized in that The active ingredients include fluazifop-propyl, isopropylamine and terbuthylazine, and the weight ratio of fluazifop-propyl, isopropylamine and terbuthylazine is 1: (5 ~ 10): (5 ~ 10).

2. The herbicidal composition according to claim 1, characterized in that The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:(5.7 ~ 7):(6~7.3).

3. The herbicidal composition according to claim 1, wherein The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:5:

5.

4. The herbicidal composition according to claim 1, characterized in that The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:5:

10.

5. The herbicidal composition according to claim 1, characterized in that The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:10:

5.

6. The herbicidal composition according to claim 1, characterized in that The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:10:

10.

7. The herbicidal composition according to claim 1, characterized in that The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:5.7:7.

3.

8. The herbicidal composition according to claim 1, wherein The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:6:

7.

9. The herbicidal composition according to claim 1, characterized in that The weight ratio of fluazifop-propyl, S-isopropylamine and terbuthylazine is 1:7:

6.

10. The herbicidal composition according to any one of claims 1 to 9, characterized in that The active ingredient accounts for 1-99% of the total weight of the composition.

11. The herbicidal composition according to any one of claims 1 to 9, characterized in that The active ingredient accounts for 5% to 70% of the total weight of the composition.

12. The herbicidal composition according to any one of claims 1 to 9, characterized in that The active ingredient accounts for 10% to 50% of the total weight of the composition.

13. The herbicidal composition according to any one of claims 1 to 9, characterized in that The active ingredient accounts for 40% to 50% of the total weight of the composition.

14. The herbicidal composition according to any one of claims 1 to 9, characterized in that The active ingredient accounts for 42% of the total weight of the composition.

15. The herbicidal composition according to any one of claims 1 to 9, characterized in that It also includes auxiliary agents, and the weight ratio of the active ingredient to the auxiliary agent is 1: (0.1~90).

16. The herbicidal composition according to any one of claims 1 to 9, characterized in that It also includes auxiliary agents, and the weight ratio of the active ingredient to the auxiliary agent is 1: (0.5~20).

17. The herbicidal composition according to claim 15, characterized in that The auxiliary agent is selected from one or more of a safener, a dispersant, a wetting agent, an emulsifier, a solvent, a cosolvent, an antifreeze agent, a stabilizer, a preservative, a thickener, a binder, a defoamer, a wall material, an acid-adjusting medium, an alkali-adjusting medium and a solid inert carrier.

18. The herbicidal composition according to claim 17, characterized in that The safener is selected from one or two of chlorpyrifos-mexyl and chlorpyrifos-butyl.

19. The herbicidal composition according to claim 17, characterized in that The safener is chlorpyrifos.

20. The herbicidal composition according to claim 17, wherein The dispersant is selected from one or more of alkylnaphthalene sulfonate, alkylbenzene sulfonic acid calcium salt, fatty amine polyoxyethylene ether, alkylphenol polyoxyethylene ether, arylphenol polyoxyethylene succinate sulfonate, octylphenol polyoxyethylene ether sulfate, polycarboxylate, lignin sulfonic acid sodium salt, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, fatty acid polyoxyethylene ester and ester polyoxyethylene ether.

21. The herbicidal composition according to claim 17, wherein The dispersant is one or more of arylphenol polyoxyethylene succinate sulfonate, polycarboxylate, and sodium lignin sulfonate.

22. The herbicidal composition according to claim 17, wherein The wetting agent is selected from one or more of sodium lauryl sulfate, sodium dodecylbenzene sulfonate, Nongru 2000# series, and sodium lauryl sulfate.

23. The herbicidal composition according to claim 17, wherein The wetting agent is one or more of sodium dodecyl sulfate and sodium dodecylbenzene sulfonate.

24. The herbicidal composition according to claim 17, wherein The emulsifier is one or more of a cationic surfactant, an anionic surfactant, a nonionic surfactant and a zwitterionic surfactant. Optionally, the emulsifier is selected from one or more of polyethylene glycol fatty acid esters, calcium dodecylbenzenesulfonate, sodium succinate sulfonate, sorbitan monooleate, sorbitan monostearate, benzylphenol polyoxyethylene ether phosphate, sorbitan trioleate, sorbitan tristearate, polyethylene glycol monostearate, sorbitan sesquioleate, sorbitan monolaurate, polyoxyethylene lauryl ether, fatty alcohol polyoxyethylene ether, fatty amine polyoxyethylene ether, polyoxyethylene lauryl ether, sorbitan polyoxyethylene ether, and polyoxyethylene sorbitan ether monooleate.

25. The herbicidal composition according to claim 17, wherein The emulsifier is selected from one or more of polyethylene glycol fatty acid esters, sorbitan trioleate, and sorbitan tristearate.

26. The herbicidal composition according to claim 17, characterized in that The solvent is selected from one or more of methanol, ethanol, propanol, isopropanol, n-butanol, tert-butanol, ethylene glycol monomethyl ether, sorbitol, dichloromethane, aromatic hydrocarbon solvent oil and methyl oleate.

27. The herbicidal composition according to claim 17, wherein The solvent is one or more of aromatic hydrocarbon solvent oil and dichloromethane.

28. The herbicidal composition according to claim 17, characterized in that The cosolvent is selected from one or more of dimethyl sulfoxide, N-methylpyrrolidone, sulfolane and ethyl acetate.

29. The herbicidal composition according to claim 17, wherein The antifreeze agent is selected from one or more of ethylene glycol, 1,2-propylene glycol, glycerol and urea.

30. The herbicidal composition according to claim 17, wherein The antifreeze agent is ethylene glycol.

31. The herbicidal composition according to claim 17, wherein The binder is selected from one or more of starch, gypsum, glucose and polyvinyl alcohol.

32. The herbicidal composition according to claim 17, wherein The binder is starch.

33. The herbicidal composition according to claim 17, wherein The thickener is selected from one or more of magnesium aluminum silicate, xanthan gum, and polyethylene glycol.

34. The herbicidal composition according to claim 17, wherein The thickener is one or more of magnesium aluminum silicate and xanthan gum.

35. The herbicidal composition according to claim 17, wherein The solid inert carrier is selected from one or more of clay, diatomaceous earth, kaolin, and light calcium carbonate.

36. The herbicidal composition according to claim 17, characterized in that The solid inert carrier is one or more of diatomaceous earth and kaolin.

37. The herbicidal composition according to claim 17, wherein The defoaming agent is selected from one or more of organic silicon, C8-10 fatty alcohol, C10-20 saturated fatty acid and amide, silicone oil and silicone compound.

38. The herbicidal composition according to claim 17, wherein The defoaming agent is an organosilicon defoaming agent.

39. The herbicidal composition according to claim 17, wherein The wall material is selected from one or more of polyurea, polyurethane, melamine resin, mixed polyurea / polyamide, polyamide, urea / formaldehyde.

40. The herbicidal composition according to claim 17, wherein The wall material is polyamide.

41. The herbicidal composition according to claim 17, wherein The acid-adjusting medium is selected from one or more of ammonium sulfate, ammonium nitrate, hydrochloric acid, and acetic acid.

42. The herbicidal composition according to claim 17, wherein The alkali adjusting medium is selected from one or more of ammonia water, sodium hydroxide and triethanolamine.

43. The herbicidal composition according to claim 17, wherein The preservative is selected from sodium benzoate and / or kasone.

44. The herbicidal composition according to any one of claims 1 to 9, characterized in that The formulation of the herbicidal composition is one of microcapsule suspension-suspension concentrate, suspoemulsion, aqueous emulsion, microemulsion, soluble concentrate, wettable powder or water-dispersible granules.

45. The herbicidal composition according to claim 44, characterized in that The formulation of the herbicidal composition is a microcapsule suspension-suspension concentrate.

46. ​​The herbicidal composition according to claim 45, characterized in that The microcapsule suspension-suspension concentrate contains 5~50 wt% of pesticide active ingredient, 1~10 wt% of wall material, 0.1~2 wt% of safener, 0.5~10 wt% of dispersant, 0.5~5 wt% of wetting agent, 3~15 wt% of emulsifier, 0~20 wt% of solvent, 0.1~5 wt% of antifreeze, 0~2wt% of stabilizer, 0~2wt% of preservative, 0~2wt% of thickener, 0~10wt% of antifreeze, 0~2wt% of acid adjustment medium, 0~2wt% of alkali adjustment medium, and the balance is water.

47. The herbicidal composition according to claim 45, characterized in that The weight fraction of the free pesticide active ingredients accounts for less than 10% of the weight fraction of the microcapsule active ingredients.

48. The herbicidal composition according to claim 45, characterized in that The microcapsule suspension-suspension concentrate contains 5~50 wt% of the pesticide active ingredient, 0.6 wt% of the safener, 3 wt% of the dispersant, 2 wt% of the wetting agent, 5 wt% of the emulsifier, 10 wt% of the solvent, 2 wt% of the wall material, 0.6 wt% of the thickener, 0.2 wt% of the defoaming agent, 4 wt% of the antifreeze agent, 0.2 wt% of the preservative, and the balance is water.

49. The herbicidal composition according to claim 45, characterized in that The microcapsule suspension-suspension concentrate contains 5-50 wt% of the pesticide active ingredient, 0.6 wt% of chlorpyrifos, 3 wt% of polycarboxylate, 2 wt% of sodium lauryl sulfate, 5 wt% of sorbitan tristearate, 10 wt% of aromatic hydrocarbon solvent oil, 2 wt% of polyamide, 0.1 wt% of xanthan gum, 0.5 wt% of magnesium aluminum silicate, 0.2 wt% of silicone defoamer, 4 wt% of ethylene glycol, 0.2 wt% of sodium benzoate, and the balance is water.

50. The herbicidal composition according to claim 44, characterized in that The formulation of the herbicidal composition is a suspoemulsion.

51. The herbicidal composition according to claim 50, characterized in that The suspoemulsion contains 3 to 60 wt% active ingredient, 3 to 15 wt% emulsifier, 0.1 to 2 wt% safener, 2 to 10 wt% dispersant, 0 to 20 wt% solvent, 0.1 to 2 wt% thickener, 0.1 to 8 wt% antifreeze, 0.05 to 3 wt% stabilizer, 0.2 to 1 wt% defoamer, and the balance is water.

52. The herbicidal composition according to claim 50, characterized in that The suspoemulsion contains 3 to 60 wt% active ingredient, 0.6 wt% safener, 5 wt% dispersant, 10 wt% solvent, 5 wt% emulsifier, 0.2 wt% defoamer, 5 wt% antifreeze, and the balance is water.

53. The herbicidal composition according to claim 50, characterized in that The suspoemulsion contains 3 to 60 wt% of active ingredient, 0.6 wt% of chlorpyrifos, 5 wt% of polycarboxylate, 10 wt% of aromatic hydrocarbon solvent oil, 5 wt% of sorbitan tristearate, 0.2 wt% of silicone defoamer, 5 wt% of ethylene glycol, and the balance is water.

54. The herbicidal composition according to claim 44, characterized in that The herbicidal composition is in the form of an aqueous emulsion.

55. The herbicidal composition according to claim 54, characterized in that The aqueous emulsion contains 5 to 60 wt% active ingredient, 0.1 to 2 wt% safener, 10 to 50 wt% solvent, 3 to 20 wt% emulsifier, 2 to 6 wt% antifreeze, 0.1 to 1 wt% defoamer, and the balance is water.

56. The herbicidal composition according to claim 54, characterized in that The aqueous emulsion contains 5 to 60 wt% active ingredient, 0.6 wt% safener, 10 wt% emulsifier, 10 wt% solvent, 0.2 wt% defoamer, 5 wt% antifreeze, and the balance is water.

57. The herbicidal composition according to claim 54, characterized in that The aqueous emulsion contains 5 to 60 wt% active ingredient, 0.6 wt% of chlorpyrifos, 10 wt% of sorbitan tristearate, 10 wt% of aromatic hydrocarbon solvent oil, 0.2 wt% of silicone defoamer, 5 wt% of ethylene glycol, and the balance is water.

58. The herbicidal composition according to claim 44, characterized in that The herbicidal composition is in the form of a microemulsion.

59. The herbicidal composition according to claim 58, characterized in that The microemulsion contains 5 to 60 wt% active ingredient, 5 to 25 wt% emulsifier, 0.1 to 2 wt% safener, 0.5 to 5 wt% antifreeze, 0 to 10 wt% cosolvent, 0 to 10 wt% stabilizer, 0 to 10 wt% preservative, and the balance is water.

60. The herbicidal composition according to claim 58, characterized in that The microemulsion contains 5 to 60 wt% active ingredient, 0.6 wt% safener, 20 wt% emulsifier, 10 wt% solvent, 5 wt% antifreeze, and the balance is water.

61. The herbicidal composition according to claim 58, wherein The microemulsion contains 5 to 60 wt% of active ingredient, 0.6 wt% of chlorpyrifos, 20 wt% of sorbitan tristearate, 10 wt% of aromatic hydrocarbon solvent oil, 5 wt% of ethylene glycol, and the balance is water.

62. The herbicidal composition according to claim 44, characterized in that The herbicidal composition is in the form of a soluble solution.

63. The herbicidal composition according to claim 62, characterized in that The soluble solution contains 5 to 60 wt% active ingredient, 5 to 25 wt% emulsifier, 0.1 to 2 wt% safener, 0 to 5 wt% antifreeze, 0 to 10 wt% cosolvent, 0 to 10 wt% stabilizer, 0 to 10 wt% preservative, and the balance is solvent.

64. The herbicidal composition according to claim 62, characterized in that The soluble solution contains 5 to 60 wt% active ingredient, 0.6 wt% safener, 10 wt% emulsifier, 10 wt% water, and the balance is solvent.

65. The herbicidal composition according to claim 58, wherein The soluble concentrate contains 5 to 60 wt% of an active ingredient, 0.6 wt% of chlorpyrifos, 10 wt% of sorbitan tristearate, 10 wt% of ethylene glycol monomethyl ether, 10 wt% of water, and the balance being isopropyl alcohol.

66. The herbicidal composition according to claim 44, characterized in that The herbicidal composition is in the form of a wettable powder.

67. The herbicidal composition according to claim 66, characterized in that The wettable powder contains 3 to 70 wt% active ingredient, 0.1 to 2 wt% safener, 0.5 to 10 wt% dispersant, 0.5 to 5 wt% wetting agent, 0 to 10 wt% defoamer, 0 to 10 wt% stabilizer, and the balance is a solid inert carrier.

68. The herbicidal composition according to claim 66, characterized in that The wettable powder contains 3 to 70 wt% active ingredient, 0.6 wt% safener, 5 wt% dispersant, 3 wt% wetting agent, 0.2 wt% defoaming agent, and the balance is a solid inert carrier.

69. The herbicidal composition according to claim 66, characterized in that The wettable powder contains 3 to 70 wt% of active ingredients, 0.6 wt% of chlorpyrifos, 5 wt% of polycarboxylate, 3 wt% of sodium lauryl sulfate, 0.2 wt% of an organosilicon defoamer, and the balance is kaolin.

70. The herbicidal composition according to claim 44, characterized in that The herbicidal composition is in the form of water-dispersible granules.

71. The herbicidal composition according to claim 70, characterized in that The water-dispersible granules contain 3 to 70 wt% active ingredient, 0.1 to 2 wt% safener, 0.5 to 10 wt% dispersant, 0.5 to 5 wt% wetting agent, 0 to 10 wt% stabilizer, 0 to 10 wt% binder, and the balance is a solid inert carrier.

72. The herbicidal composition according to claim 70, characterized in that The water-dispersible granules contain 3 to 70 wt% of active ingredient, 0.6 wt% of safener, 5 wt% of dispersant, 3 wt% of wetting agent, 0.2 wt% of defoamer, 5 wt% of binder, and the balance is kaolin.

73. The herbicidal composition according to claim 70, characterized in that The water-dispersible granules contain 3 to 70 wt% of an active ingredient, 0.6 wt% of chlorpyrifos, 5 wt% of a polycarboxylate, 3 wt% of sodium lauryl sulfate, 0.2 wt% of an organosilicon defoamer, 5 wt% of starch, and the balance being kaolin.

74. Use of the herbicidal composition according to any one of claims 1 to 73 for soil sealing treatment before sowing crops.

75. Use of the herbicidal composition according to any one of claims 1 to 73 in controlling weeds in farmland.

76. The use according to claim 75, characterized in that The farmland weed pests include grass weeds and / or broadleaf weeds.

77. The use according to claim 75, characterized in that Grass weeds include one or more of barnyard grass, foxtail grass, crabgrass, and goosegrass.

78. The use according to claim 75, characterized in that The broadleaf weeds include one or more of Commelina, Amaranthus retroflexus, Chenopodium album, Purslane, Amaranthus chinensis, and Polygonum aviculare.

79. A method for using the herbicidal composition according to any one of claims 1 to 73, characterized in that: The application amount of the active ingredient of the herbicidal composition is 30-60 g of active ingredient per mu.

80. The method of use according to claim 79, characterized in that: The application method is spraying.

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