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摘要：通过田间药效试验，筛选对移栽稻田杂草具有较好防效的除草剂，为科学、安全、高效应用除草剂提供依据。结果表明，750 g a.i./hm2 40%五氟·丁草胺悬浮剂+67.50 g a.i./hm2 30%苄嘧磺隆可湿性粉剂或525 g a.i./hm2 500 g/L丙草胺乳油+67.50 g a.i./hm2 30%苄嘧磺隆可湿性粉剂可用于移栽稻田土壤封闭处理，其对一年生杂草的株防效分别为83.90%、76.19%，鲜质量防效分别为94.29%、86.31%。针对以稗草发生危害为主的田块，可用90 g a.i./hm2 10% 精·氰氟乳油、1 620 g a.i./hm2 90%禾草丹乳油、24 g a.i./hm2 25 g/L五氟磺草胺可分散油悬浮剂或120 g a.i./hm2 100 g/L唑酰草胺乳油+ 90 g a.i./hm2 10%氰氟草酯乳油在苗后对茎叶进行喷雾处理，其株防效和鲜质量防效均在96%以上。
关键词：移栽稻田;除草劑;土壤处理;茎叶喷雾;防除效果
中图分类号：S451.21文献标志码：A文章编号：1003-935X（2019）02-0040-06
Control Effect of Herbicides on Weeds in Transplanted Paddy in Xinjiang
ZHAO Zhiqiang1，GAO Haifeng2，BAI Weiwei2，LI Guangkuo2，YUAN Jie1
（1.Institute of Nuclear Technology and Biotechnology，Xinjiang Academy of Agricultural Sciences，Urumqi830091，China;
2.Institute of Plant Protection，Xinjiang Academy of Agricultural Sciences / Key Laboratory of Integrated Pest
Management on Crop in
Northwestern Oasis，Ministry of P.R.China / Scientific Observing and Experimental
Station of Korla，Ministry of Agriculture，Urumqi 830091，China）
Abstract：The present study was conducted to screen herbicides with better control effect on weeds of transplanted paddy field in order to provide guidance for scientific，safe and efficient use of herbicides. Mixtures of 40% penoxsulam？machette SC 750 g a.i./hm2+30% bensulfuron methyl WP 67.50 g a.i./hm2，and 500 g/L pretilachlor EC 525 g a.i./hm2+30% bensulfuron methyl WP 67.50 g a.i./hm2 were effective on weeds，achieving control levels of 84% and 76% based on plant number，and of 94% and 86% based on fresh weight. Formulations
收稿日期：2018-12-29
