Effect and Security Test of 30% Fomesafen·Quizalofop-P -Ethyl.Bentazone EC for Controlling Weeds in Spring Soybean Field

30% Fomesafen·Quizalofop-P-Ethyl·Bentazone EC is a ternary compound with the absorption and contact action within the new spring soybean field postemergence weed mixture.During 1～2 trifoliolate leaf stage of soybean and annual grass weeds in 3 to 5 leaf stage,broadleaf weeds 2 to 4 leaf stage,commodity dose of 80 ～ 100ml/667m2(amount of active ingredient 360 ～ 450g/hm2) for stems and leaves uniform spray was safe to soybean growth.The total control effect and the fresh weight of control effect were more than 94% 30 days after application.Compared with a single dose of the herbicide,it had a good spectrum of complementary and enhanced the controlling effect.Controlling of gramineae grasses and broadleaf weeds in soybean fieldin could be achieved effectively by one application.