丙草胺封闭小麦田防治硬草的效果研究

目的]了解国产丙草胺与进口丙草胺(瑞飞特)土壤封闭麦田硬草Sclerochloa kengiana(Ohwi)Tzvel.]的防效及安全性。方法]研究了不同剂量国产丙草胺与进口丙草胺(瑞飞特)小麦田土壤封闭硬草的防效及对小麦的安全性。结果]不同剂量国产丙草胺与进口丙草胺(瑞飞特)对硬草的防效均达88%以上,其中50%瑞飞特1 200 ml/hm2的防效较好、安全性佳,但国产丙草胺一旦重喷易出现药害,安全性较瑞飞特差。结论]为硬草的有效防除提供了参考。

Control Effect of Pretilachor against Sclerochloa kengiana in Closed Wheat Filed

Objective J The aim was to understand the control effect of domestic and imported Pretilachor against Sclerochloa kengiana in closed wheat filed and the safety to wheat. Method ] Control effects of different dosages of domestic Pretilachor and imported Pretilachor （Rifit） against S. kengiana in closed wheat filed and the safety to wheat were studied. Result] The control effects of different dosages of do- mestic Pretilachor and imported Pretilachor（Rifit） against S. kengiana in closed wheat filed were over 88%, among them 50% Rifit 1 200 ml/hm^2 had good control effect and safety, but domestic Pretilachor had worse safety than Rifit once it was sprayed again. Conclusion] The research results orovide reference for the efficient control of S. kengiana.