Fluroxypyr, cyhalofop-butyl and penoxsulam compounded dispersible oil suspension and preparation method thereof

Abstract

The invention provides a fluroxypyr, cyhalofop-butyl and penoxsulam compounded dispersible oil suspension and a preparation method thereof and relates to the technical field of weed control of directly-sown rice fields. The dispersible oil suspension is at least prepared from the raw materials in parts by weight: 10 parts of fluroxypyr, 10 parts of cyhalofop-butyl, 3 parts of penoxsulam, 3 parts of fatty alcohol-polyoxyethylene ether, 5 parts of styryl phenol polyoxyethylene ether, 0.5 part of xanthan gum, 0.5 part of sodium benzoate, 0.5 part of antifoamer and the balance of deionized water. The preparation method comprises the steps of mixing and stirring the raw materials in a preparing kettle, then, carrying out primary milling by a colloid mill, then, carrying out fine grinding by a sander, carrying out sampling analysis, carrying out filtration after samples are qualified, carrying out metering, carrying out packaging and carrying out warehousing. By mixing 23% of the fluroxypyr, cyhalofop-butyl and penoxsulam compounded dispersible oil suspension according to a proportioning ratio of 10: 10: 3, the fluroxypyr, cyhalofop-butyl and penoxsulam compounded dispersible oil suspension can achieve an obvious synergism range, and preparations of other proportioning ratios all cannot achieve the obvious synergism range.

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 fluroxypyr, 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 direct-seeded rice fields such as barnyardgrass, stephenia chinensis, and bermudagrass, for example, Chinese patent "CN 105284836A" discloses a "herbicide composition containing gibberellic acid Its preparation method and application", consists of the following components in parts by weight: 0.01-99 parts of gibberellic acid, 1-90 parts of herbicide. The herbicides are cyhalofop-ethyl, penoxsulam, fenoxen, bispyribac, quinclorac, sapon, pretilachlor, butachlor, fenthiazamide, benzyl rimsulfuron-methyl, pyrazosulfuron-methyl, pyrimifluben, bentazone, mesotrione, chlorpyrazosulfuron-methyl, meto...

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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