Weeding composition containing penoxsulam and benthiocarb

The invention discloses a rice field weeding composition containing penoxsulam and benthiocarb and an application thereof. The rice field weeding composition is composed of a first active component penoxsulam, a second active component benthiocarb and an auxiliary, and the weight ratio of the first active component to the second active component is (0.2-10) : (10-300). The composition can be made into a suspoemulsion, a capsule suspension, an emulsifiable concentrate, a microemulsion, a water emulsion, wettable powder, water dispersible granules and granules which are agriculturally allowed. The weeding composition of the invention has reasonable components and a good weeding effect, and is low in application cost. The activity and the weeding effect of the composition are not the simple superposition of the activities of the components. Compared with the conventional single-component formulation, the weeding composition not only has a remarkable weeding effect, but also has a remarkable gain effect, is good in prolonged resistance and safety, and meets the safety requirement of pesticide formulations. The weeding composition containing penoxsulam and benthiocarb is used to weed rice fields before re-seedling or early-stage weeding that follows seedling, and has higher activity of weeding the rice fields.