Weeding composition with trichlopyr and triafamone and application of weeding composition

The invention discloses a weeding composition with trichlopyr and triafamone and application of the weeding composition. The weeding composition consists of trichlopyr and triafamone in a weight ratioof (5-40):1. The invention further discloses application of the weeding composition in preventing and controlling weeds in transplanting rice fields. The two chemicals are capable of respectively killing weeds of different class groups, and in addition have remarkable synergetic effects after being compounded, the amount of a herbicide can be reduced, and the security to rice can be improved; andin addition, the two chemicals are still safe to rice when being compounded and used while rice is transplanted, so that the weeding composition can be used while rice is transplanted by using a ricetransplanter in match, and the labor cost for using the herbicide can be reduced. The two chemical components have complementary herbicide controlling spectrums, after compounding, the herbicide controlling spectrums can effec