CN-121986795-A - Emulsifiable concentrate herbicide and preparation method and application thereof

Abstract

The invention relates to the technical field of herbicides, and discloses an emulsifiable concentrate type herbicide and a preparation method and application thereof, wherein the emulsifiable concentrate type herbicide mainly comprises clomazone and metolachlor, the clomazone and metolachlor are compounded according to a scientific proportion, the complementation of action mechanisms of broadleaf weeds and grassy weeds is realized, the compound preparation has a remarkable comprehensive prevention effect on common weeds such as barnyard grass, green bristlegrass, amaranth and the like in a rape field, which is superior to that of each single agent and conventional barrel mixing, the weeding spectrum is wide, the duration is long, the synergistic effect of the clomazone and the metolachlor is obvious, and the prevention effect can reach 99% at most.

Inventors

• HU XIAOXIANG
• LIU GENWANG
• LIU HAOYU

Assignees

• 安徽佰沃作物保护有限公司

Dates

Publication Date

20260508

Application Date

20260306

Claims (7)

1. 1. The emulsifiable concentrate herbicide is characterized by comprising 50-80% by weight of active ingredients and the balance of auxiliary materials; the effective component is clomazone Ping He Jing Ying pretilachlor; the weight ratio of the clomazone to the metolachlor is 1:7-8; The auxiliary materials comprise a solvent, a cosolvent and an emulsifier.
2. 2. The emulsifiable concentrate herbicide of claim 1, characterized in that the weight ratio of clomazone to metolachlor is 1:7.5.
3. 3. The emulsifiable concentrate herbicide of claim 1, wherein the solvent is one or more of N-methyl pyrrolidone (NMP), dimethylformamide (DMF), and xylene.
4. 4. The emulsifiable concentrate herbicide of claim 1, wherein the emulsifier is one or more of agro-emulsion 500# (calcium dodecyl benzene sulfonate) and agro-emulsion 600# (phenethyl phenol polyoxyethylene ether).
5. 5. The emulsifiable concentrate herbicide of claim 1, wherein the co-solvent is dimethyl sulfoxide.
6. 6. The emulsifiable concentrate herbicide as set forth in claim 1, characterized in that the preparation method of the emulsifiable concentrate herbicide comprises the steps of: adding clomazone and cosolvent into solvent, stirring and dispersing for 10-20min, adding metolachlor and emulsifier, stirring for 20-30min, and mixing to obtain emulsifiable concentrate herbicide.
7. 7. Use of the emulsifiable concentrates type herbicide as claimed in any one of claims 1 to 6 for weed control.

Description

Emulsifiable concentrate herbicide and preparation method and application thereof Technical Field The invention relates to the technical field of herbicides, in particular to an emulsifiable concentrate type herbicide and a preparation method and application thereof. Background Rape is an important grain and oil crop in our country, but is subject to serious harm of annual grassy weeds and broadleaf weeds during growth, resulting in significant reduction of yield and quality. The soil sealing treatment before seedling is a key link of weed control in rape fields, can effectively control early germination of weeds, and creates a favorable environment for growth of rape seedlings. At present, single herbicide used for pre-emergence sealing of rape fields has limited types, and the problems of enhanced drug resistance, narrow weed killing spectrum and the like of weeds are easily caused by single use for a long time. Clomazone is a selective early-stage herbicide before and after seedling, has good control effect on amaranthus retroflexus, barnyard grass and part of perennial weeds by inhibiting synthesis of isoprene in weeds, but has longer residual period in soil when being singly used, and possibly has influence on aftercrop sensitive crops. The metolachlor is an amide herbicide, has excellent control effect on most annual grassy weeds such as barnyard grass, green bristlegrass, goosefoot grass and the like by inhibiting protein synthesis of weed buds, has certain effect on part of small seed broadleaf weeds, but has poor control effect on the uneaten-leaved weeds and part of broadleaf weeds. Disclosure of Invention In order to overcome the technical problems, the invention aims to provide an emulsifiable concentrate herbicide and a preparation method and application thereof, and solve the problems of limited weed control spectrum, higher potential environmental risk, possibility of influencing succeeding crops and the like in the prior art. The aim of the invention can be achieved by the following technical scheme: An emulsifiable concentrate herbicide comprises 50-80% by weight of active ingredients, and the balance of auxiliary materials; the effective component is clomazone Ping He Jing Ying pretilachlor; the weight ratio of the clomazone to the metolachlor is 1:7-8; The auxiliary materials comprise a solvent, a cosolvent and an emulsifier. Further, the weight ratio of the clomazone to the metolachlor is 1:7.5. Further, the solvent is one or more of N-methyl pyrrolidone (NMP), dimethylformamide (DMF) and xylene. Further, the emulsifier is one or more of pesticide emulsion 500# (calcium dodecyl benzene sulfonate) and pesticide emulsion 600# (phenethyl phenol polyoxyethylene ether). Further, the cosolvent is dimethyl sulfoxide. Further, the preparation method of the emulsifiable concentrate herbicide comprises the following steps: adding clomazone and cosolvent into solvent, stirring and dispersing for 10-20min, adding metolachlor and emulsifier, stirring for 20-30min, and mixing to obtain emulsifiable concentrate herbicide. Further, the application of the emulsifiable concentrate herbicide in weed control is provided. The invention has the beneficial effects that: The clomazone can effectively prevent and remove various broadleaf weeds and sedge, and the isopropamide can effectively prevent and remove gramineous weeds, the complementary action mechanism of broadleaf weeds and grassy weeds is realized, and the compound preparation has obviously better comprehensive control effect on weeds such as barnyard grass, green bristlegrass, amaranth and the like which are common in rape fields than that of each single agent and conventional barrel mixing, and has wide weed killing spectrum and long lasting period. The invention innovatively selects a compound system of N-methyl pyrrolidone (NMP) and an aromatic hydrocarbon solvent, and successfully solves the problem of difficult co-dissolution of high-content clomazone and metolachlor. The raw materials of the formula are easy to obtain, the production process adopts a mature emulsifiable concentrate processing route, special equipment is not needed, only conventional mixing and filtering are needed, and the method is suitable for large-scale industrial production and stable in quality control. Detailed Description The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Examples Adding clomazone and cosolvent into solvent, stirring and dispersing for 20min, adding metolachlor and emulsifier, stirring for 30min, and mixing to