50 %丰登稻草失可湿性粉剂防治抛秧田杂草 ,防效显著高于对照药剂 50 %稻特利可湿性粉剂和10 %苄黄隆可湿性粉剂。稻草失药后 2 2 d的株防效为 77.3%～ 91.2 % ,鲜重防效为 82 .5%～ 93.5% ;尤其对莎草和鸭舌草的防效达 10 0 % ;其次是对稗草的防效 ,株防效为 80 .0 %～ 93.3% ;鲜重防效为 76 .2～ 88.5%。在生产上建议每 6 6 6 .7m2用 35～ 50 g。 50% FengDeng straw wettable powder prevention and control of weeds thrown seedling, control effect was significantly higher than the control agent 50% of the rice terry wettable powder and 10% of benzyl yellow powder WP. The control efficacy of the straw was 77.3% ~ 91.2% after 22 days and the control effect of fresh weight was 82.5% ~ 93.5%, especially for sedge and monocotyledon; followed by The control efficacy of barnyardgrass was 80.0% ~ 93.3%. The control effect of fresh weight was 76.2% ~ 88.5%. In production, it is recommended to use 35 ~ 50 g every 6 6 6 .7m2.