Ternary weeding composition and application thereof

The invention provides a ternary weeding composition and application thereof, the ternary weeding composition is composed of an active component A, an active component B and an active component C. The active component A is pretilachlor, the active component B is anilofos, the active component C is tetrazolomide, and when the mass ratio of pretilachlor to anilofos to tetrazolomide is (5-15): 3: 0.4, the ternary weeding composition shows a synergistic effect; the composition provided by the invention can effectively reduce the use dosage of active ingredients, reduce the probability of phytotoxicity, prolong the lasting period, slow down the generation of drug resistance of weeds and relieve environmental pollution. 本发明提供一种三元除草组合物及其应用，其由活性成分A、活性成分B和活性成分C组成，活性成分A为丙草胺，活性成分B为莎稗磷，活性成分C为四氟络草胺，当其丙草胺、莎稗磷和四氟络草胺质量配比为（5-15）:3:0.4时表现为增效作用；本发明的组合物可以有效降低活性成分的使用剂量，降低药害的机率，延长持效期，减缓杂草抗药性的产生，减轻环境污染。