Composite herbicide and applications thereof

Abstract

The invention discloses a composite herbicide, wherein an effective component is composed of clodinafop-propargyl and isoproturon, wherein the effective component contains 0.1-98.0% by weight of clodinafop-propargyl, and 1.0-98% by weight of isoproturon. The composite herbicide provided by the invention can effectively control harm of beckmannia syzigachne in a wheat field, alopecurus japonicas, and weeds like chickweed and crickweed; the composite herbicide has characteristics of function complementation to enlarge a weed control spectrum, and synergistic interaction to raise control quality, and reaches multi-effects with one drug.

Description

technical field [0001] The invention relates to a composite herbicide whose active ingredients are clodinafop-propargyl and isoproturon, belonging to the field of pesticides. Background technique [0002] As we all know, wheat, rice, corn, etc. are the most important food crops in my country, and the level of food production is directly related to national food security, social stability and harmony. For wheat, the main crop species in the north, the disorderly growth of vicious weeds such as hardgrass, kanmai, Japanese kanmai, and weeds seriously affects the yield of wheat. Among them, in recent years, the area and severity of the damage caused by Aurantia miltiorrhiza and Weedgrass in Japan have increased year by year. In a few areas, the wheat yield of individual fields has lost as much as 20-30%, and the most serious fields have formed grass shortages. The damage is imminent and has become one of the most important problems in the field of wheat pest prevention. [000...

AI Technical Summary

Problems solved by technology

[0003] At present, the pesticides used against wheat grass weeds mainly include clodinafop-propargyl, fenoxaprop-p-ethyl, chlorotoluron, isoproturon and isoproturon·chlorotoluron, etc. It has been proved by the practice of production and application that these The pesticide has a good control effect on hard grass in the wheat field and ordinary Aurantium, but only 30-40% of the control effect on Japanese Amygrass and Azalea

Judging from the herbicide varieties currently on the market, so far there is no single agent or compound agent product with excellent control effect on wheat field oystergrass and japonica. When weeding, we can only mix and match different herbicides according to our own experience, which lacks scientificity, the control effect is unstable, and phytotoxicity often occurs, resulting in reduced wheat production.

[0004] In the prior art, some people try to use multi-component compound herbicides to solve the above problems. For example, Chinese patent 201210009678.7 discloses a three-component compound herbicide composition. Due to the unscientific allocation of the dosage of each component and three different molecules There is a certain conflict in the chemical composition of the structure, which leads to the unsatisfactory weeding effect in actual application. At the same time, the compound use of the three components greatly increases the difficulty and cost of actual application.

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