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葱地种蝇属双翅目,花蝇科,又名葱蝇、蒜蛆。近几年来,在我们地区危害十分严重,是百合科蔬菜的主要害虫之一。该虫是寡食性害虫,主要危害百合科蔬菜,以幼虫蛀入葱、蒜等鳞茎内危害,引起腐烂,叶片枯黄萎蔫,甚至成片死亡。韭菜受害后,常造成缺苗断垅,甚至全田毁种。据1995年作者调查,一般被害株率达20％-45％,严重地块可达65％以上,严重影响了百合科蔬菜的产量和质量。 一、发生规律 葱蝇在我们地区一年发生3代,以蛹在寄主根际及土中或粪堆中越冬,第二年4月上旬当日平均气温上升至8℃时开始羽化。第一代幼虫 5月上、中
Onion genus Diptera, flies family, also known as onion fly, garlic maggots. In recent years, the harm in our region is very serious and is one of the major pests of Liliaceae vegetables. The insect is an omnivore pest, the main harm to Liliaceae vegetables, larvae eaten into the onion, garlic and other bulbs within the harm, causing decay, withered leaves withered, or even a piece of death. Leeks victims, often resulting in lack of seedlings broken 垅, and even the whole field destroyed. According to the survey conducted by the author in 1995, the average strain rate of damaged plants reached 20% -45%, and the massif could reach more than 65%, seriously affecting the yield and quality of Liliaceae vegetables. First, the occurrence of law Onion fly occurred in our region three generations a year, with the pupae in the host rhizosphere and soil or manure in the winter, the second day of April the same day the average temperature rose to 8 ℃ began to emerge. The first generation of larvae in May on, in