The invention discloses a mixed herbicide containing bentazone, cyhalofop-butyl and
quinclorac, and application thereof, belonging to the field of herbicides. Bentazone, cyhalofop-butyl and
quinclorac are used as main
active components of the mixed herbicide, the
mass ratio of bentazone to cyhalofop-butyl to
quinclorac is 0.1-80:0.1-80:0.1-80, and the total
mass percentage of the three componentsin the mixed herbicide is 1 to 85%. The mixed herbicide provided in the invention has substantial effects in application of weeding after
seedling emergence in a paddy rice field, especially in application of preventing and eliminating various grassy and broadleaf weeds in the paddy rice field. Compared to a single herbicide, on the premise of improving
drug effects, the mixed herbicide in the invention enables resistance of weeds to be delayed, has a broad weeding spectrum and a long persistent period, and is safe to paddy rice and succeeding crops.