40%苯噻酰·苄·高杀可湿性粉剂防除水稻直播田杂草效果

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。

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

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.