田间试验结果表明,保护性耕作条件下苗后除草剂在玉米3～5叶期、杂草2～4叶期施用4%烟嘧磺隆悬浮剂75和100 mL/667m²,药后45 d总株防效分别为86.31%和93.50%,总鲜重防效为87.87%和94.72%,除草活性高于莠去津,尤其对禾本科杂草的鲜重防效均在91.38%以上。4%烟嘧磺隆50mL/667m²+38%莠去津80 mL/667m²混用后,对双子叶杂草除草效果有增效作用,株防效为92.47%,鲜种防效为94.02%。4%烟嘧磺隆50 mL/667m²+72%2,4-D丁酯30 mL/667m²混用后对双子叶杂草除草效果有增效作用,株防效为91.10%,鲜重防效为93.02%。40%福分悬浮剂350 mL/667m²、400 mL/667m²药后45 d的总株防效分别为89.80%和91.92%,总鲜重防效为90.54%和92.57%,除草剂活性高于莠去津,尤其对双子叶杂草鲜重的防效均在92.68%以上。