葱蝇是洋葱的毁灭性害虫,以一、二代幼虫为害洋葱地下部分,造成全株死亡,1988——1989年受害重的洋葱田,植株死亡30％以上,更甚者耕翻改种。本文介绍了葱蝇的形态特征、生活习性,提出了农业防治和化学防治的措施。 Onion is a destructive pest onions, onion and second-generation larvae damage to the underground parts of onions, resulting in death of the whole plant, 1988-1989 years heavy weight of the onion field, plant deaths more than 30%, what is worse, plowing transformation. In this paper, the morphological characteristics and living habits of onion fly were introduced, and the measures of agricultural control and chemical control were put forward.