Abstract: Growth rate method was used to test resistance to Fuji-one, isoprothiolane in 175 effective isolates of Magnapothe grisea, which collected from 26 counties in Guizhou Province.

• 文章摘要: 采用生长速率法测定了呆自贵州省26个县（市）不同年份稻瘟病标样175个稻瘟病菌单孢菌株对稻瘟灵的抗药性。