Tribenuron-methyl and carfentrazone-ethyl compounded wettable powder and preparation method thereof

Abstract

The invention discloses a tribenuron-methyl and carfentrazone-ethyl compounded wettable powder and a preparation method thereof and relates to the technical field of broad-leaf weed control of winter wheat fields. The tribenuron-methyl and carfentrazone-ethyl compounded wettable powder is at least prepared from, by weight, 14 parts of tribenuron-methyl, 22 parts of carfentrazone-ethyl, 10 parts of fatty alcohol-polyoxyethylene ether, 10 parts of phenethyl phenol polyoxyethylene-polyoxypropylene ether and 100 parts of light calcium carbonate. The preparation method includes: mixing raw materials which are subjected to coarse grinding and airflow grinding in sequence prior to fully mixing; performing sampling analysis and weighing, packaging and storing after sampling analysis is qualified. When 36% of the tribenuron-methyl and carfentrazone-ethyl compounded wettable powder compounded at the ratio of 7:11 is blended in use, the obvious synergistic effect range is achieved, while other preparations blended in ratio cannot achieve the obvious synergistic effect range.

Description

technical field [0001] The invention relates to the technical field of broad-leaved weed control in winter wheat fields, in particular to a wettable powder compounded with tribenuron-methyl and mefentrazone and a preparation method thereof. Background technique [0002] At present, the existing herbicidal composition for controlling broad-leaved weeds in winter wheat fields, for example, Chinese patent "CN101455201 A" discloses a "composition for controlling broad-leaved weeds in wheat fields", which contains the active ingredient component A and component B, component A refers to ethyl 4-chloro-2-oxybenzothiazol-3-yl acetate, component B refers to tribenuron-methyl, thiasulfuron-methyl, bensulfuron-methyl, monosulfuron-methyl , monosulfuronate, etc. one or more. In addition, the Chinese patent "CN 105875617A" discloses a pesticide synergistic composition "comprising bisfentrazone and pyrazole compounds" for controlling drug-resistant weeds in wheat fields. A synergistic h...

AI Technical Summary

Problems solved by technology

For example, the suspending agent product produced has a poor suspension rate, which can easily cause uneven spraying and local phytotoxicity of crops. The main reason is that there are different defects in the selection of adjuvants.

[0006] 3), compounding problem, by carrying out toxicity test, heat 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 additive synergistic effect can be achieved

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