Quinclorac and bispyribac-sodium compound suspending agent and preparation method thereof

Abstract

The invention discloses a quinclorac and bispyribac-sodium compound suspending agent and a preparation method thereof, relating to the technical field of direct sowing rice field annual weed prevention and treatment. The quinclorac and bispyribac-sodium compound suspending agent is prepared from 25 parts of quinclorac, 2.5 parts of bispyribac-sodium, 3 parts of fatty alcohol-polyoxyethylene ether, 5 parts of styrylphenol polyoxyethylene ether, 0.5 parts of xanthan gum, 0.3 parts of sodium benzoate, 0.5 parts of defoamer and 63.2 parts of deionized water by weight. All the materials are sucked in a preparation kettle to be mixed and stirred, and then are preliminarily ground by a colloid grinder, and are finely ground by a sand mill; after being qualified by a sampling analysis, a product is filtered, metered, packed and warehoused. With the quinclorac and the bispyribac-sodium mixed at a ratio of 10:1, the compounded quinclorac and bispyribac-sodium compound suspending agent of 27.5 percent can achieve an obvious synergism range, while other preparations mixed at other ratios cannot achieve the obvious synergism range.

Description

technical field [0001] The invention relates to the technical field of annual weed control in direct-seeding paddy fields, in particular to a compound suspending agent of quinclorac and bispyribac and a preparation method thereof. Background technique [0002] At present, the existing herbicides used to prevent and treat annual weeds in direct-seeding paddy fields, for example, Chinese patent "CN102461505A" discloses a "mixed herbicidal composition containing bispyribac and quinclorac", using a weight ratio of 1-99: 1-99 bisbibclofen and quinclorac are compounded. Another Chinese patent "CN1685824A" discloses a "quinclorac herbicidal composition", which is composed of quinclorac, bispyribac, saponin and penoxsulam. [0003] The inventor has verified through long-term experiments that the above-mentioned several herbicidal compositions mainly have the following defects: [0004] 1), by testing several specific proportions disclosed by the above-mentioned several herbicidal ...

AI Technical Summary

Problems solved by technology

For example, 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, resulting in uneven spraying

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

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