Weed control composition containing ametryn, sulfentrazone and flazasulfuron and application thereof

The invention provides a weed control composition containing ametryn, sulfentrazone and flazasulfuron and an application thereof, which relate to the weed control composition. The weed control composition comprises the ametryn, the sulfentrazone and the flazasulfuron which serve as active materials. The invention also relates to a method for disposing unwanted plants by using the weed control composition. The weed control composition contains the active materials which are the ametryn, sulfentrazone and flazasulfuron. According to the weed control composition, the weight ratio of the ametryn to the sulfentrazone is (30:1)-(1:30), the weight ratio of the ametryn or sulfentrazone to the flazasulfuron is (90:1)-(1:10), and the total weight of the ametryn, sulfentrazone and flazasulfuron accounts for 5-95% of the weight of the weed control composition. The weed control composition is mainly used for preventing and killing off weeds, especially cyperus rotundus in sugar crane farms, corn fields, citrus orchards and other places.