Pyrazosulfuron-ethyl, clomazone and butachlor compound dispersible oil suspension concentrate and preparation method thereof

Abstract

The invention provides a pyrazosulfuron-ethyl, clomazone and butachlor compound dispersible oil suspension concentrate and a preparation method thereof, relating to the technical field of control of weeds in direct sowing paddy fields. The pyrazosulfuron-ethyl, clomazone and butachlor compound dispersible oil suspension concentrate is prepared from 2 parts of pyrazosulfuron-ethyl, 8 parts of clomazone, 60 parts of butachlor, 2 parts of fatty alcohol-polyoxyethylene ether, 3 parts of styrylphenol polyoxyethylene ether, 2 parts of xanthan gum, 1 part of sodium benzoate, 2 parts of organic silicon and 20 parts of solvent oil by weight. The preparation method is characterized by pumping the raw materials into a preparation kettle, mixing and stirring the raw materials, then carrying out primary milling with a colloid mill, then finely milling with a sand mill, carrying out sampling analysis, and filtering, metering, packaging and warehousing after samples are qualified. The pyrazosulfuron-ethyl, clomazone and butachlor compound dispersible oil suspension concentrate achieves better control of annual grassy weeds, cyperaceous weeds and part of broadleaf weeds in the direct sowing paddy fields, and achieves united synergy of pyrazosulfuron-ethyl, clomazone and butachlor, thus achieving obvious synergistic effects; therefore mixing pyrazosulfuron-ethyl, clomazone and butachlor to control the annual grassy weeds, the cyperaceous weeds and part of the broadleaf weeds in the direct sowing paddy fields is feasible and is also necessary.

Description

technical field [0001] The invention relates to the technical field of weed prevention and control in rice direct seeding fields, in particular to a dispersible oil-suspending agent compounded with pyrazosulfuron-methyl, clomazone and butachlor and a preparation method thereof. Background technique [0002] At present, the existing pesticides used for weed control, for example, the Chinese patent "CN 103960253A" discloses a "paddy field herbicide composition containing propanil and clomazone", in which propanil and clomazone pine basic raw materials, and at least one of acetochlor, pretilachlor or butachlor, and raw materials such as 2,4-D butyl ester are added. Another Chinese patent "CN 103858914A" discloses a "wheat field herbicide composition", with clomazone and clomazone-methyl as active ingredients, wherein the weight ratio of clomazone and clomazone-methyl 1:8 to 32:1. [0003] The inventor has verified through long-term tests that the above-mentioned several herbi...

AI Technical Summary

Problems solved by technology

For example, wettable powder is easy to cause product sticking, not easy to disperse and suspend in water, or block the nozzle, and cause precipitation in the sprayer, resulting in uneven spraying and easy to cause phytotoxicity in rice leaves and other parts

[0006] 3), compounding problem, by carrying out toxicity test, thermal storage stability test and mixing co-toxicity coefficient measurement to the several specific proportions disclosed by the above-mentioned several herbicide compositions, it is found that no obvious synergistic effect can be achieved

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