Composition containing C20H19N3ClF3O3 and chlortoluron and used for treating Alopecurus japonicas with resistance and application of composition

Abstract

The invention discloses a composition containing C20H19N3ClF3O3 and chlortoluron and used for treating Alopecurus japonicas with resistance and application of the composition. The herbicide composition has the advantages that the composition can effectively prevent and weed gramineous weeds, which has resistance and uses Alopecurus japonicas with resistance as the dominant species, in winter wheatfields and is safe to wheat; herbicide use amount can be lowered evidently, herbicide use times can be reduced, and field chemical prevention and weeding cost can be reduced; weed resistance generation and recurrence are delayed; part of broadleaf weeds can also be treated, herbicide weed control spectrum can be expanded and the like. The composition is a currently feasible herbicide compositionfor preventing and weeding the gramineous weeds in the winter wheat fields.

Description

technical field [0001] The invention belongs to the technical field of plant protection, and relates to a herbicide composition with cyclopyrazone and chlortoluron as active ingredients, which is used for controlling winter wheat whose dominant species is fenoxaprop-op japonica field resistant grassy weeds. Background technique [0002] Wheat is a crop widely planted all over the world. It is one of the most important food crops in the world, and its yield is second only to corn. About 40% of the world's population uses wheat as their main food. According to statistics, the total sown area of ​​wheat in my country in 2017 was 23.9875 million hectares, and the total wheat output was 129.774 million tons, accounting for 21.38% of the country's total grain sown area and 21% of the country's total grain output. [0003] In our country, the annual gramineous species in wheat fields that are widely and seriously damaged mainly include A. chinensis, A. japonica and A. japonica. A...

AI Technical Summary

Problems solved by technology

In Jiangsu, Anhui, Henan, Shandong, Hubei and other places, there have been a large number of reports on the resistance of annual grass weeds in wheat fields, such as the oxaprop-methyl-resistant Japanese safflower, kansia, scorpion, and the resistant Mesosulfuron-methyl kanmai and Japanese kanmai which are resistant to acesulfame, etc., have seriously affected the safety of wheat production

However, the dosage of substituted urea herbicides used alone is relatively large, so finding new herbicides for combined use in wheat fields is an important way to control resistant grass weeds in w

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