Composite herbicide and preparation method thereof

Abstract

The invention discloses a composite herbicide and a preparation method thereof. The composite herbicide comprises raw materials in parts by weight as follows: 40-50 parts of quinclorac, 10-20 parts of cyclohexanedione, 10-15 parts of thiopyrandione, 6-10 parts of acetochlor, 8-12 part of chloroacetamide, 5-9 parts of thiencarbazone-methyl, 4-8 parts of aminopyralid, 1-5 part of sodium dibutylnaphthalenesulfonate, 13-17 parts of a surfactant and 20-40 parts of an assistant. The composite herbicide and the preparation method thereof have the advantages that the weed removal effect is very good, and the herbicide is safe and efficient and has good degradation effect and few residues.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a compound herbicide and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, chemical weeding, as a modern and practical technology, plays a huge role in weed control; although the development time of chemical weeding technology is not long, but the development speed is relatively fast; with the modernization of China's agriculture With the development and gradual transfer of agricultural labor force, cultivation methods tend to be large-scale and intensive, and the demand for pesticides has increased significantly; among them, the growth rate of herbicides in recent years is much higher than the development level of insecticides and fungicides, accounting for about to 1 / 3 of the proportion of pesticide production; at present, there are many kinds of herbicides, which can be divided into stem and leaf treatment agen...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of science and technology, chemical weeding, as a modern and practical technology, plays a huge role in weed control; although the development time of chemical weeding technology is not long, but the development speed is relatively fast; with the modernization of China's agriculture With the development and gradual transfer of agricultural labor force, cultivation methods tend to be large-scale and intensive, and the demand for pesticides has increased significantly; among them, the growth rate of herbicides in recent years is much higher than the development level of insecticides and fungicides, accounting for about to 1 / 3 of the proportion of pesticide production; at present, there are many kinds of herbicides, which can be divided into stem and leaf treatment agents and soil sealing treatment agents according to the method of use, and can be divided into two types: selective and destructive according to their mode of action; The conductivity can be divided into contact herbicides and conductive pad herbicides; according to the chemical composition, it can be divided into sulfonamide herbicides and malic acid herbicides, etc.; however, the community composition of old agricultural weeds is diverse, And along with the kind of weeds of the different growth stages of crops also changes; Although a large amount of herbicide varieties have been developed for the production of the needs of chemical weeding in farmland; There is a lack of herbicide varieties that can selectively control all weeds in the whole growth period of crops. At the same time, long-term use of a single herbicide variety can lead to weed resistance or cause changes in weed species. The rapid replacement of populations has greatly increased the difficulty of chemical weeding in farmland. While developing new herbicides, the mixed use of two or more herbicide varieties has also emerged as the times require.