Tralkoxydim and mesosulfuron compounded water dispersible granule and preparation method thereof

Abstract

The invention relates to a tralkoxydim and mesosulfuron compounded water dispersible granule and a preparation method thereof, and relates to the technical field of control of annual grassy weeds and broadleaf weeds in wheat fields. The tralkoxydim and mesosulfuron compounded water dispersible granule is prepared from 72 parts of tralkoxydim, 3 parts of mesosulfuron, 6 parts of fatty alcohol sulfate, 3 parts of ammonium sulfate, 2 parts of polyethylene glycol and 14 parts of kaolin. The method comprises the following steps: mixing above raw materials except polyethylene glycol, crushing the obtained mixture by using an ultramicro airflow crusher to obtain a wettable pulvis, adding the wettable pulvis to a fluidized bed drying granulator, granulating the wettable pulvis in a fluidized bed by using an aqueous solution of polyethylene glycol, drying the granulated substance in a drying machine, screening to obtain a product, sampling and analyzing the product, and metering, packaging and warehousing after the product is qualified. The 75% tralkoxydim and mesosulfuron compounded water dispersible granule prepared by mixing tralkoxydim and mesosulfuron according to a ratio of 24:1 has obvious synergistic effects, and preparations prepared by mixing tralkoxydim and mesosulfuron according to other ratios cannot reach the obvious synergistic effects.

Description

technical field [0001] The invention relates to the technical field of prevention and control of annual gramineous weeds and broad-leaved weeds in wheat fields, in particular to a compound water-dispersible granule composed of trimethylbenzophenone and mesosulfuron-methyl and a preparation method thereof. Background technique [0002] At present, the existing herbicidal composition used for the control of annual gramineous weeds and broad-leaved weeds in wheat fields, for example, Chinese patent "CN102550585A" discloses a "methasulfuron-methyl compound herbicide", in which the effective activity The ingredients are methylsulfuron-methyl, flucarbazone-methyl, isoproturon and so on. Another Chinese patent "CN102792959A" discloses a "herbicide composition containing mesosulfuron-methyl and dicamba", wherein the effective active ingredients are dicamba and mesosulfuron-methyl, and the ratio of the two is 1: 0.7~60:1. [0003] The inventor has verified through long-term experim...

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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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