The result showed10%Caowei weeded widely,had specially good effect on sedge family and broadleaf weeds and cockspur grass,the total effect of10%Caowei15g /667m 2 was6.8%more than10%Caokexing,22.2%more than10%Yikejing,improved17.9%in output than blank.

• 结果表明；10%25草威杀草谱广；对莎草科和阔叶杂草有特效；对稗草有极强的抑制使用。 10%25草威15g/667m2总防效比10%25草克星提高6.；8%25；比10%25一克净提高22