HERBICIDAL COMPOSITION, PREPARATION AND APPLICATION THEREOF

The present invention relates to agricultural chemicals, in particular, to a herbicidal composition, a preparation, and an application thereof. The herbicidal composition comprises 3-(2-chloro-4-fluoro-5-(3-methyl-2,6-dioxo-4-trifluoromethyl-3,6-dihydropyrimidine-1(2H)-yl)phenyl)-5-methyl-4,5-dihydroisoxazole-5-carboxylic acid ethyl ester and glyphosate, the weight ratio of which is 1:(10-100). The present invention also provides a dispersible oil suspension comprising the herbicidal composition. By selecting and optimizing the types and contents of emulsifier, dispersing agent, synergist, viscosity modifier, and dispersion medium, the prepared dispersible oil suspension is stable in quality, good in performance, and more beneficial to exertion of the chemical effect, and has excellent low-temperature fluidity, dispersion stability, thermal storage stability, or the like; the raw materials are easy to obtain, the preparation process is simple, and the present invention is easy for industrial production and suitable for preventing weeds in noncropland.