Synergistic herbicidal composition

The present invention relates to a synergistic herbicidal composition, said composition comprising a herbicidally active ingredient and saflufenacil MCPA or derivatives thereof, suitable for the selective control of weeds in useful crops such as rice. Synergistic herbicidal composition comprising a herbicidally active ingredient and saflufenacil MCPA or a derivative thereof, wherein the weight saflufenacil or a derivative thereof MCPA ratio of 100: 1 to 1: 100 . The present invention may also contain safeners. By the present invention, saflufenacil and MCPA binary composite or a derivative thereof, such that the new composition obtained can solve the problem that used singly saflufenacil expand herbicide on weeds spectrum, while the delay of drug resistance. First use can basically solve the weeds in rice, labor, time-saving, labor-saving, but also has a role to increase production of rice. The effect of the gain achieved in the control of rice fields broad-leaved weeds, weed grasses and sedge weeds.