通过田间试验研究了噻吩磺隆和2,4-D异辛酯及其混用,对小麦田阔叶杂草的防除效果。结果表明:在药后2周时,噻吩磺隆单剂处理的株防效为93.8%,2,4-D异辛酯单剂的株防效为94.4%,混用后的株防效达到100%;药后30天时,噻吩磺隆单剂处理的鲜重防效为85.1%,2,4-D异辛酯单剂的鲜重防效为71.5%,混用后的鲜重防效达到98.8%。 Field experiments were conducted to study the control effects of thifensulfuron-methyl and 2,4-D isooctyl-ester and their mixture on broad-leaved weeds in wheat field. The results showed that the control efficacy of the single-agent of thifensulfuron-methyl was 93.8% at 2 weeks after treatment, the anti-efficacy of 2,4-D isooctyl ester alone was 94.4%, and the control efficacy of the mixture was 100 %. After 30 days of treatment, the fresh weight control effect of single thifensulfuron-methyl treatment was 85.1%, the fresh weight control effect of 2,4-D isooctyl ester single agent was 71.5%, and the fresh weight control effect after mixing was 98.8 %.