[Objective]The aim was to screen out effective herbicide which could control weeds in Semen coicis field and was safe for Semen coicis.[Method]The control effect of five kinds of closed herbicide applied after sowing and before emergence and four kinds of closed herbi-cide applied after emergence against weeds in Semen coicis field and their safety to Semen coicis were studied through plot test.[Result]The 40% butachlor· oxadiazon EC applied after sowing and before emergence at 2 000 mL/hm2and the 2.5% penoxsulam oil suspending agent applied after emergence at 4 000 mL/hm2had good control effect on weeds in Semen coicis field and was safe for Semen coicis.[Conclusion] The result provides reference for prevention and control of weeds in Semen coicis field.%[目的]筛选适宜防治薏仁田杂草且对薏仁安全的除草剂.[方法]采用田间小区试验,研究了5种播后苗前封闭除草剂、4种苗后茎叶除草剂对薏仁田杂草防除效果和薏仁生长的安全性.[结果]播后苗前封闭防治杂草使用40%丁草胺· 噁草酮乳油,使用剂量为2000 mL/hm2;苗后茎叶处理使用2.5%五氟磺草胺油悬浮剂,使用剂量为4000 mL/hm2.采用这2种药剂防治薏仁杂草效果明显且能保证薏仁安全生长.[结论]该试验结果为薏仁田杂草防控提供了参考.
展开▼
