Controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl

The invention discloses a controlled-releasing herbicide containing cyhalofop butyl, mefenacet and pyrazosulfuron ethyl, which relates to the technical field of pesticide preparation. The controlled-releasing herbicide takes cyhalofop butyl, pyrazosulfuron ethyl and mefenacet as main effective components, wherein the mass ratio of cyhalofop butyl to pyrazosulfuron ethyl to mefenacet is 1-30:1-15:1-50; and the mass percentage content of cyhalofop butyl, pyrazosulfuron ethyl and mefenacet in the herbicide is 30-90%. The controlled-releasing herbicide has an advanced preparation technology, has no pollution, and has good technical value, the controlled-releasing herbicide has the advantage of convenient usage, spraying and fertilizer broadcasting cannot be performed, the controlled-releasingherbicide is directly sprayed at ridge or field, the controlled-releasing herbicide is uniformly dispersed in water through diffusion of the controlled-releasing herbicide in the water or soil, through a plant absorption and