黑麦秆蝇(Oscinella Pusilla Meigen)又叫瑞典秆蝇、燕麦蝇等,属双翅目黄潜蝇科。小麦、大麦、燕麦为其主要寄主。据1979—1984年调查,夏谷被害率5.96—62.6%,是栗芒蝇为害率的1.8倍;被害株含虫量为栗芒蝇的5.46倍。近年来随着农村种植业结构的改变,扩大了麦田面积,夏谷数量又有上升,对该虫的防治已成为当务之急。我们经过5年的观察,初步掌握了该虫在谷田的发生消长情况及有效防治办法。 Rye stalk flies (Oscinella Pusilla Meigen), also known as Swedish flies, oat flies, etc., is a Diptera, Wheat, barley and oats are their main hosts. According to the survey of 1979-1984, the death rate of summer valley was 5.96-62.6%, which was 1.8 times of that of chestnut flies and 5.46 times of the insect population of chestnut fly. In recent years, with the changes in the structure of rural farming, expanding the area of ​​wheat fields, the number of summer valleys have risen, the worm prevention and control has become a top priority. After five years of observation, we initially mastered the occurrence and growth of the insect in Gutian and the effective prevention and treatment measures.