Fenoxaprop-P-ethyl, cyhalofop-butyl and penoxsulam compound dispersible oil suspension concentrate and preparation method thereof

Abstract

The invention provides a fenoxaprop-P-ethyl, cyhalofop-butyl and penoxsulam compound dispersible oil suspension concentrate and a preparation method thereof, belonging to the technical field of control of weeds in rice direct seeding fields. The compound dispersible oil suspension concentrate is at least prepared from 4 parts of fenoxaprop-P-ethyl, 16 parts of cyhalofop-butyl, 6 parts of penoxsulam, 3 parts of fatty alcohol-polyoxyethylene ether, 5 parts of styrylphenol polyoxyethylene ether, 0.5 part of xanthan gum, 0.5 part of sodium benzoate, 0.5 part of defoaming agent and the balance of deionized water, wherein the total number of parts is 100. 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 carrying out fine milling with a sand mill, carrying out sampling and analysis and carrying out filtering, metering, packaging and warehousing after the samples are qualified. The fenoxaprop-P-ethyl, cyhalofop-butyl and penoxsulam compound dispersible oil suspension concentrate has the beneficial effects that the 26% fenoxaprop-P-ethyl, cyhalofop-butyl and penoxsulam compound dispersible oil suspension concentrate prepared by mixing fenoxaprop-P-ethyl, cyhalofop-butyl and penoxsulam in a ratio of 4 to 16 to 6 can achieve obvious synergistic effects, but preparations prepared by mixing in other ratios can not achieve obvious synergistic effects.

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 fenoxaprop-ethyl, cyhalofop-methyl and penoxsulam and a preparation method thereof. Background technique [0002] At present, the existing herbicidal compositions used for the control of weeds in rice fields such as barnyardgrass, moshangcai and bermudagrass, for example, Chinese patent "CN103348981A" discloses a "bicyclic sulcotrione compound rice field "Herbicide", each component in the herbicide includes by weight percentage: 5-80% of active ingredients, 5-20% of adjuvants, 5-80% of fillers, wherein the first active ingredient is bicyclic sulcotrione, and the second active ingredient Acetochlor, metolachlor, propachlor, pretilachlor, butachlor, mefenacet, penoxsulam, cyhalofop-ester, quinclorac, bensulfuron-methyl , pyrazosulfuron-methyl, etesulfuron-methyl, clomazone, fenoxap...

AI Technical Summary

Problems solved by technology

For example, the prepared dispersible oil suspension concentrate is easy to cause the product to stick, it is not easy to disperse and suspend in water, or to block the nozzle, and to settle in the sprayer, etc., resulting in uneven spraying and local phytotoxicity of the crops. There are different defects in the selection of additives and fillers

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

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