30%氟·精·灭乳油防除春大豆田杂草药效及安全性评价

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

30%氟·精·灭EC是三元复配具有内吸及触杀作用的新型春大豆田苗后除草混剂。在大豆1～2片复叶期,一年生禾本科杂草3～5叶期,阔叶杂草2～4叶期,商品剂量为80～100 mL/667 m2(有效成分用量360～450 g/hm2)进行茎叶均匀喷雾,对大豆生长安全,药后30 d对杂草的总株防效及鲜重防效均大于94%,相比单剂具有较好的杀草谱互补、提高防效的优点,可达到一次用药同时防除大豆田一年生禾本科及阔叶杂草的效果。

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/hm^2） 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.