3％双氟磺草胺·唑草酮悬乳剂对小麦田阔叶杂草的防除效果及安全性

摘要

Objective] The aim was to clear control effect of 3% florasulam · carfentrazone suspended emulsion against broadleaf weeds in wheat field and safety to wheat.[Method] We studied the control effect of 3%florasulam· carfentrazone suspended emulsion against broadleaf weeds in wheat field and safety to wheat by plot test.[ Result] The 3% florasulam · carfentrazone suspended emulsion applied at 7.2-18.0 g a.i./hm2 had good control effect on Descurainia sophia, Capsella bursa-pastoris and Galium aparine, and the plant control effect and fresh weight control effect in 40 days after treatment were 79.66%-93.26% and 82.19%-94.53%, respectively, furthermore it was safe to wheat. [Conclusion] The results provide theoretical basis for the promotion of 3% florasulam· carfentrazone suspended emulsion in large area.%[目的]明确3％双氟磺草胺·唑草酮悬乳剂防除冬小麦田阔叶杂草的效果和对小麦的安全性。[方法]采用田间小区试验研究3％双氟磺草胺·唑草酮悬乳剂对小麦田杂草的防效和对小麦产量的影响。[结果]3％双氟磺草胺·唑草酮悬乳剂有效成分用量为7．2～18．0 g a．i．／hm2时对小麦田播娘蒿、荠菜、猪殃殃等杂草均有较好的防治效果，药后40 d总体株防效为79．66％～93．26％，鲜重防效为82．19％～94．53％，且对小麦安全性较好。[结论]试验结果为3％双氟磺草胺·唑草酮悬乳剂的大面积推广提供了理论依据。