0.2苄嘧·丙草胺药肥颗粒剂防除水稻抛栽田杂草的效果试验

摘要

To broadcast 0.2%pretilachlor﹒bensulfuron, G.R. directly after the rice Transplanting field for 7 days, it’s should be kept to 3~5cm shallow waters after broadcasted in 5 days. This can make a good control efficiency to prevent the annual weeds such as Barnyardgrass,Cyperaceae , Lindernia procumbens(krock.) philcox, Ammannia baccifera.L , Cyperus iria L.ect . When using the preparation 10 kg/667m2&12 kg/667m2,the weeds con-trol efficiency is 99.90%. and fresh weight control efficiency respectively in 99.92%& 99.97%. Field trials showed that it’ s safe to the rice; also can increase Production to 5.94%&7.35%.%　　0.2%苄嘧·丙草胺药肥颗粒剂在水稻抛秧后7天直接撒施,施后田间保持3~5cm浅水层5天,对水稻田的稗草、异型莎草、陌上菜、水苋菜和碎米莎草等一年生杂草都有较好的防效.使用其制剂10 kg/667m2和12 kg/667m2,药后45d,杂草株防效均达到99.90%,鲜重防效分别为99.92%和99.97%.且对水稻安全,可增产稻谷5.94%和7.35%.