Pyraflufen-ethyl and florasulam compound suspending agent and preparation method thereof

Abstract

The invention provides a pyraflufen-ethyl and florasulam compound suspending agent and a preparation method thereof and relates to the technical field of preventing and controlling annual broad leaf weeds in wheat field. The pyraflufen-ethyl and florasulam compound suspending agent is prepared by taking the following raw materials: 2 parts of pyraflufen-ethyl, 2 parts of florasulam, 3 parts of fatty alcohol-polyoxyethylene ether, 3 parts of styryl phenol polyoxyethylene ether, 0.3 part of xanthan gum, 0.4 part of sodium benzoate, 0.3 part of defoaming agents and the balance of deionized water. The preparation method comprises the following steps of: putting all the raw materials into a preparation kettle, mixing and stirring, and then primarily grinding with colloid mill; finely grinding with a sand mill; sampling and analyzing; filtering after the powder is qualified; and metering, packaging and putting into storage. According to the invention, the compounded 4% pyraflufen-ethyl and florasulam compound suspending agent mixed at the ratio of 1:1 can obviously widen the synergism scope and the other preparation being mixed at ratio cannot achieve the effect of obviously widening the synergism scope.

Description

technical field [0001] The invention relates to the technical field of prevention and control of annual broad-leaved weeds in wheat fields, in particular to a compound suspending agent of metazafen and florasulam and a preparation method thereof. Background technique [0002] At present, there are existing herbicidal compositions for controlling annual broad-leaved weeds in wheat fields. For example, Chinese patent CN103461344A discloses a "herbicidal composition for wheat fields", and the active ingredients are saflufenacil, mefentrazone, chlorofluoro Pyroxyacetic acid, the weight percentage of saflufenacil in the composition is 1% to 20%, the weight percentage of fenflurzone in the composition is 1% to 20%, and the weight percentage of fluroxypyr in the composition is The percentage is 1% to 50%, and the rest are pesticide adjuvants. Another Chinese patent CN 104521997A discloses a "wheat field herbicide composition", the active ingredients are florasulam, aminopyralid (o...

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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