Compound emulsifiable concentrate of butachlor, oxadiargyl and oxyfluorfen and preparation method of compound emulsifiable concentrate

Abstract

The invention discloses compound emulsifiable concentrate of butachlor, oxadiargyl and oxyfluorfen and a preparation method of the compound emulsifiable concentrate, and relates to the technical field of prevention and treatment of annual weeds in a transplanted rice field. The compound emulsifiable concentrate is prepared by at least 50 parts of butachlor, 5 parts of oxadiargyl, 5 parts of oxyfluorfen, 7.5 parts of tristyrylphenol polyoxyethylene ether, 7.5 parts of a distyrylphenol polyoxyethylene ether formaldehyde condensate, and 15 parts of calcium dodecylbenzene sulfonate. The method comprises: adding butachlor, oxadiargyl and oxyfluorfen into xylene while performing stirring till the materials are totally dissolved, adding the left raw materials, performing uniform mixing through stirring by a reaction vessel, performing sampling for content analysis, performing standing, filtering, and packaging after the sample is qualified, performing secondary sampling for content analysis, and putting the obtained produce in storage after the sample is qualified. When the amount of butachlor, oxadiargyl and oxyfluorfen is 60% of the compound emulsifiable concentrate, the ratio of butachlor to oxadiargyl to oxyfluorfen is 10:1:1, and the compound emulsifiable concentrate is in a range of an obvious synergistic effect. The compound emulsifiable concentrate with another ratio cannot be in the range of an obvious synergistic effect.

Description

technical field [0001] The invention relates to the technical field of annual weed prevention and control in transplanted rice fields, in particular to butachlor, propargyl oxadiazone and oxyfluorfen compound cream and a preparation method thereof. Background technique [0002] At present, there are existing herbicidal compositions for the control of annual weeds in transplanted rice fields such as moshangcai, barnyardgrass, and bermudagrass. For example, Chinese patent "CN 103858895A" discloses a "paddy field synergistic herbicidal composition" , wherein the active ingredient is one of oxadiazone and propargyl oxadiazone, pretilachlor or butachlor, clomazone, wherein the weight percentage of each active ingredient in the total composition is, oxadiazone 5 -40% or propargyl clomazone 0.5-20%, pretilachlor 5-30%, clomazone 2-30%. Another Chinese patent "CN 102428935A" discloses a "propargyl oxadiazone and butachlor aqueous emulsion", the weight percentage of each component i...

AI Technical Summary

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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