几种常用麦田除草剂大田药效比较

Comparison on Weeding Effects of Several Kinds of Chemical Herbicides in Wheat Field

[目的]了解目前市场上几种常用麦田除草剂在各自推荐用量下的防效,为农民合理选择、科学使用除草剂提供参考。[方法]研究了目前市场上常用的有代表性的防除麦田阔叶杂草的除草剂4个单剂、4个复配制剂的大田防效。[结果]10%唑草酮可湿性粉剂有效成分用量30.0 g/hm2、10%苯磺隆可湿性粉剂有效成分用量22.5 g/hm2、288 g/L氯氟吡氧乙酸异辛酯乳油有效成分用量210.0g/hm2、50 g/L双氟磺草胺悬浮剂有效成分用量4.5 g/hm2、20%氯吡·苯磺隆可湿性粉剂有效成分用量108.0 g/hm2、36%唑草·苯磺隆可湿性粉剂有效成分用量27.0 g/hm2、55%苯·唑·2甲钠可湿性粉剂有效成分用量412.5 g/hm2、5%双氟·唑草酮悬浮剂有效成分用量30.0 g/hm2药后30 d的株数防效分别为88.79%、9.35%、61.68%、73.83%、55.14%、90.65%、93.46%和96.26%,鲜重防效分别为91.08%、26.49%、73.35%、88.54%、71.83%、92.18%、96.76%和98.17%。[结论]通过防效比较得出,含有唑草酮成分的产品株防效较高。

[ Objective ] Weeding effects of several kinds of chemical herbicides in wheat field were studied to provide reference for reasonable se- lection and use of herbicides. [ Method] Efficiency in field of several common herbicides against broadleaf weeds in wheat field was studied. [ Result] The amounts Of active ingredient were 10% carfentrazone-ethyl WP 30.0 g/hm^2, 10% tribenuron methyl WP 22.5 g/hm~, 288 g/L Fluroxypr mepthyl EC 210.0 g/hm~, 50 g/L Florasulam SC 4.5 g/hm^2, 20% halosulfuron-tribenuron methyl WP 108.0 g/hm^2, 36% carfentra- zone ethyl-tribenuron methyl WP 27.0 g/hm^2, 55% tribenuron methyl-carfentrazone ethyl -MCPA WP 412.5 g/hm^2, 5% Florasulam-carfentra- zone ethyl SC. Their control effects were 88.79%, 9.35%, 61.68%, 73.83%, 55.14%, 90.65%, 93.46% and 96.26%, or 91.08%, 26.49%, 73.35%, 88.54%, 71.83%, 92. 18%, 96.76% and 98.17% by fresh weigh, respectively. [ Conclusion] Through comparison, the herbicides which contained carfentrazone ethyl ingredient had better control effects.