A kind of active composition containing chloramethachlor and diuron and its application

Abstract

The invention discloses an active composition containing chloramphenicol and diuron, and the mass ratio of chloramphenicol and diuron is 0.5-30:1-120. The active composition provided by the invention is suitable for weeding in cotton fields, and has the advantages of wide herbicidal spectrum, high herbicidal activity, crop safety, no resistance to weeds, and the like.

Description

technical field [0001] The invention belongs to the field of pesticides, and relates to an active composition containing chloramethachlor and diuron and an application thereof. Background technique [0002] my country is the largest cotton producer in the world, and the current cotton planting area and total output account for about 1 / 4 of the world. The herbicides used in cotton fields mainly include pre-sowing and post-sowing pre-emergence soil treatment agents and stem and leaf treatment agents. The cost of using stem and leaf treatment agents is generally high, so soil treatment agents are mainly used for weeding in cotton fields in my country. The three commonly used soil sealing agents for cotton fields are pendimethalin, acetochlor and trifluralin, which have the following deficiencies at present: (1) the use cost of pendimethalin is too high; (2) acetochlor The grass spectrum is narrow, the persistence period is short, and it has high requirements on soil moisture;...

AI Technical Summary

Problems solved by technology

The three commonly used soil sealing agents for cotton fields are pendimethalin, acetochlor and trifluralin, which have the following deficiencies at present: (1) the use cost of pendimethalin is too high; (2) acetochlor Narrow grass spectrum, short duration, and high requirements on soil moisture; (3) Trifluralin is a long-residual herbicide, which is easy to cause phytotoxicity after cropping, and must be mixed with soil when used, which is labor-intensive and time-consuming. It can also cause swelling of the cotton root

At the same time, due to the long-term use of the aforementioned herbicides in production, the weed community in the cotton field has undergone great changes. In some areas, weeds with strong drug resistance have tended to rise, and it is difficult for a single herbicide to solve all the weeds in the cotton field. grass control

[0003] The prior art has developed some compound cotton field soil treatment herbicides, mainly acetochlor, butachlor, metolachlor, napropachlor, promethazin, trifluralin, pendimethalin, The compound varieties of traditional herbicides such as Zhongbuling, oxadiazone, clomazone, and oxyfluorfen are not enough to solve the control of all weeds in cotton fields

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