Cyhalofop-butyl, quinclorac and bispyribac-sodium compound suspending agent and preparation method thereof

Abstract

The invention discloses a cyhalofop-butyl, quinclorac and bispyribac-sodium compound suspending agent and a preparation method thereof and relates to the technical field of annual weed control of a direct seeding rice field. The cyhalofop-butyl, quinclorac and bispyribac-sodium compound suspending agent is at least prepared from 15 parts of cyhalofop-butyl, 20 parts of quinclorac, 5 parts of bispyribac-sodium, 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 an antifoaming agent and the balance of deionized water based on 100 parts. The preparation method comprises the following steps of: pumping the raw materials into a preparation kettle, and mixing and stirring; performing preliminary grinding with a colloid mill and fine grinding with a sand mill; sampling and analyzing; and if the product is qualified, filtering, measuring, packaging and storing. In the invention, the 40% compound suspending agent is mixed in a ratio of 3:4:1, an obvious synergistic effect is realized for controlling annual weed of the direct seeding rice field while the preparation mixed in other ratios cannot realize an obvious synergistic effect.

Description

technical field [0001] The invention relates to the technical field of annual weed prevention and control in rice direct-seeding fields, in particular to a compound suspending agent of cyhalofop-ethyl, quinclorac and bispyribac and a preparation method thereof. Background technique [0002] At present, the existing herbicidal compositions used for the control of annual weeds in direct-seeded rice fields such as barnyard grass, stephenia chinensis, special-shaped sedge and crabgrass, for example, Chinese patent "CN 102293202A" discloses a "full weed for paddy fields" Orientation herbicide", which includes component A and component B, wherein component A is mesotrione, and component A is compounded with one or more components in component B for weeding in the field; Component B is alachlor, metolachlor, acetochlor, acetochlor, pretilachlor, butachlor, mefenamide, quinclorac, cyhalofop, pendimethalin Ling, Sapainphos, bispyribac, saflufenacil, cyclamate, pyrifluben. Another C...

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Problems solved by technology

For example, the prepared wettable powder is easy to cause product sticking, is not easy to disperse and suspend in water, or clogs the nozzle, and causes precipitation in the sprayer, etc., resulting in uneven spraying and local phytotoxicity of crops. The main reason is that it helps There are different defects in the selection of agents 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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