除草剂啶磺草胺对作物的安全性及应用效果

明确7.5%啶磺草胺WG应用在青海春小麦、青稞田后,对作物的安全性及杂草的防除效果。结果表明,7.5%啶磺草胺WG亩用13.33g对野燕麦防效达95%左右,阔叶杂草防除效果达80%以上,对田间苣荬菜、大刺儿菜两种菊科杂草有一定防效,7.5%啶磺草胺WG对作物安全,使用后小麦增产10%以上,青稞田增产15%,是青海高寒地区麦类作物田较为适宜的除草剂。

The safety and application effect of herbicide pyroxsulam on crops

After the application of 7.5 % pyroxsulam WG in Qinghai spring wheat and highland barley fields, the safety of crops and the control effect of weeds were clarified. The results showed that the control effect of 7.5 % pyroxsulam WG with 13.33 g per mu on wild oats was about 95 %, and the control effect of broadleaf weeds was more than 80 %. It had certain control effect on two kinds of Compositae weeds in the field, Sonchus arvensis and Pieris rapae. 7.5 % pyroxsulam WG was safe to crops. After use, the yield of wheat increased by more than 10 %, and the yield of highland barley field increased by 15 %. It was a suitable herbicide for wheat crop field in Qinghai alpine region.