40%苯噻酰·苄·高杀可湿性粉剂防除水稻直播田杂草效果

Effects of Wettable Powder Mixed with Mefenacet,Bensulfuron-methyl and Bentyiocarb for Control of Weeds in Direct Sowing Rice Fields

为明确杂草防除对水稻田间管理的重要性,研究40%苯噻酰·苄·高杀可湿性粉剂对水稻直播田主要杂草的防除效果、对水稻产量的影响以及杂草氮、磷、钾和水分含量的变化规律。结果表明,40%苯噻酰·苄·高杀可湿性粉剂对水稻直播田的主要杂草具有良好的防除效果,有效成分用量为600～1 800 g/hm2的40%苯噻酰·苄·高杀WP综合密度防效和综合鲜重防效分别为96.44%～99.62%、97.14%～99.92%,显著优于对照药剂36%禾·苄WP、10%苄嘧磺隆WP和50%苯噻酰草胺WP。40%苯噻酰·苄·高杀可湿性粉剂施用后,增产效果总体优于对照药剂。

In order to evaluate the importance of weeds control for farming management in direct sowing rice field,the weeds control effects of 40% mefenacet·bensulfuron-methyl·bentyiocarb WP and its effect on crop yield,as well as the variety discipline of the absorption of nitrogen,phosphorus,kalium and moisture were studied.The results showed that 40% mefenacet·bensulfuron-methyl·bentyiocarb had good control effects to the main weeds in direct sowing rice fields.The overall density control effects and fresh weight control effects were 96.44%～99.62%,97.14%～99.92%,and siginificantly higer than those of 36% bentyiocarb WP,10% bensulfuron-methyl WP and 50% mefenacet WP.The application of 40% mefenacet·bensulfuron-methyl·bentyiocarb WP siginificantly increased the yield of rice which were better than those of the control herbicides.