Topramezone-containing corn field weed control composition

The invention discloses a topramezone-containing corn field weed control composition and application of the corn field weed control composition. The topramezone-containing corn field weed control composition is prepared from a first active component, a second active component and a third active component which are respectively 0.5-30% of topramezone, 0.5-25% of nicosulfuron and 5-80% of atrazine by weight percent. The composition can be prepared into agriculturally acceptable suspending agent, water dispersible granules, wettable powder or dispersible oil suspending agent. The topramezone-containing corn field weed control composition is reasonable in components and good in corn field weed control effect; the activity and the weed control effect of the corn field weed control composition are not a simple superposition of the activity of all the components; compared with the existing single preparation or binary composite preparation, the topramezone-containing corn field weed control composition has remarkable synergism besides remarkable weed control effect; the composition is less in consumption, large in herbicide controlling spectrum and good in safety for corns. The corn field weed control composition has a remarkable control effect for the weed of a corn field.