精恶唑禾草灵防除青稞田野燕麦药效试验

摘要

Trials of fenoxaprop-p-ethyl EW for control of Avena fatua were conducted in highland barley field. The result showed that the normal dosage of 69 g/L fenoxaprop-p-ethyl EW was 900-1 200 mL/hm2(effective dose was 62.1~82.8 g/hm2). It was sprayed on stems and leaves at 300 kg/hm2 during 3-5 leaves in highland barley. Its plant control effect was 81.2%-89.0%, and fresh control effect was 83.2%~90.8% after 40 days. It had good control effect on weeds and was safe to highland barley. After the application, the yield of highland barley increased by 3.5%-11.8%.%试验采用精恶唑禾草灵EW防除青稞田田间杂草野燕麦,结果表明,69 g/L精恶唑禾草灵EW适宜用药量为900～1 200 mL/hm2(有效成分量62.1～82.8 g/hm2),于青稞3～5叶期施药,采用300 kg/hm2药液茎叶喷雾,药后40d株防效81.2%～89.0%,鲜重防效83.2%～90.8%,除草效果良好,对青稞安全,施用后青稞增产3.5%～11.8%.