The results showed that the mortalities of egg,larva,pupa and adult of this pest in fields were 42.7%,14.5%,4.4% and 12.6% for the first generation,and 32.8%,16.5%,18.9% and 15.6% for the second generation,respectively.

• 结果表明:自然条件下；1、2代稻秆潜蝇的卵、幼虫、蛹、成虫死亡率分别为42.；7%25、14