10%唑草酮WP防除春小麦田一年生阔叶杂草效果及安全性评价

Efficiency and safety of 10% carfentrazone-ethyl WP on controlling annual broad leafweed in field of spring wheat

为明确10%唑草酮WP田间使用的除草效果及其对小麦的安全性,采用田间药效试验的方法对10%唑草酮WP防除春小麦田一年生阔叶杂草的效果及安全性进行评价。结果表明:使用10%唑草酮WP剂量330 g/hm^2(有效量33 g/hm^2)为宜,对杂草总体防效可达80%以上,对野油菜防除剂量可降至300 g/hm^2(有效量30 g/hm^2)施用。在推荐剂量下小麦可增产4.84%~7.25%,这说明10%唑草酮WP防除春小麦田一年生阔叶杂草效果较好且较为安全。

10% carfentrazone-ethyl WP is a new herbicide to control annual broad leafweed in the spring wheat field. This test is to clear the weed control effect and security of wheat. The results showed that using 10% carfentrazone-ethyl WP had good control effect on annual broad leafweed, and the suitable dosage was 330 g/hm^2 （ effective dose is 33 g/hm^2 ）. The general weed control effect was higher than 80%. The herbicide dosage can be reduced to 300 g/hm^2 （ effective dose is 30 g/hm^2） to control wild rapeseed. Under the recommended dose, the yield of wheat increased by 4.84% - 7.25%. It means,the effect of 10% carfentrazone-ethyl wp is better and safer.