A kind of bispyribac-cyhalofop-butyl suspoemulsion and preparation method thereof

Abstract

The invention especially relates to a bispyribac sodium-cyhalofop butyl suspoemulsion and a preparation method thereof, belonging to the technical field of pesticides. The bispyribac sodium-cyhalofop butyl suspoemulsion comprises, by mass, 5 to 10% of bispyribac sodium, 15 to 20% of cyhalofop butyl, 1 to 5% of an emulsifier, 2 to 5% of a wetting agent, 2 to 5% of a dispersing agent, 0.5 to 1% of a thickening agent, 2 to 3% of an anti-freezing agent, 0.05 to 0.3% of an antifoaming agent, 0.1 to 1.5% of a pH value adjusting agent and 15 to 20% of an organic solvent, with the balance being water. According to the invention, a scientific ratio of surfactants (including the emulsifier, the wetting agent and the dispersing agent) is employed, so the physical and chemical stability of the ispyribac sodium-cyhalofop butyl suspoemulsion is improved, the utilization rate of the ispyribac sodium-cyhalofop butyl suspoemulsion is increased, and the weeding efficacy of the ispyribac sodium-cyhalofop butyl suspoemulsion is enhanced. The suspoemulsion provided by the invention is prepared through compounding of ispyribac sodium and cyhalofop butyl, has high cost performance, a wide weed control spectrum and fast action, does no harm to later crops and is a novel high-efficiency dosage form of herbicide for rice field.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a bispyribac-cyhalofop-emulsion suspoemulsion and a preparation method thereof. Background technique [0002] Rice is not only the most important food crop in my country, but also one of the main food crops in the world. Nearly half of the world's population, including almost all of East and Southeast Asia, eat rice. Production is on every continent except Antarctica. In the late last century, the average annual rice output in the world was about 400 billion kilograms, and the planting area was about 145 million hectares. The sown area of ​​rice in my country accounts for 1 / 4 of the national grain crops, about 35 million hectares per year, while the output accounts for more than half. Regardless of planting area and output, rice ranks first among my country's grain crops. [0003] And the paddy fields of all rice-growing regions in my country have always had a large amount...

AI Technical Summary

Problems solved by technology

However, after research, these dosage forms all have the problem of low control effect

At the same time, the existing wettable powders of bispyriben and cyhalofop in China will produce dust during production and use, which will cause pollution to the environment and people; , delamination and other unstable phenomena seriously affect the drug efficacy; bispyribac and cyhalofop-ethyl EC contain a large amount of harmful solvents, which seriously pollute the environment; too high

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