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近几年来,大蒜根蛆普遍发生,尤其在烂母子蒜时期,根蛆危害更为严重。大蒜受害后,常造成干尖,枯心,甚至死亡,一般减产20—30%,严重的几乎绝收。为了消灭根蛆危害,近两年我们在王村大队第六生产队大蒜地,定点按期进行了调查。一、生活习性根蛆以蛹和老熟幼虫过冬。越冬蛹于3月中旬羽化产卵,第一代幼虫于3月下旬开始危害,成虫高峰期在4月27日左右;第二代幼虫危害盛期在4月下旬至5月上旬,这时正是母子蒜腐烂,招引成虫产卵多,幼虫繁殖
In recent years, garlic root maggots generally occur, especially in the mother and son garlic period, the root maggots endangered more serious. Garlic after the victims, often resulting in dry tip, withered, or even death, the general cut 20-30%, the serious almost absolutely. In order to eliminate the root maggot hazards, in the past two years we are in the sixth production team Wangcun brigade garlic, fixed-point investigation. First, life habits Root maggots to larvae and pupa overwintering. Overwintering pupae eclosion oviposition in mid-March, the first generation of larvae began to endanger in late March, the peak adult age around April 27; second-generation larvae peak in late April to early May, when Garlic is the mother decay, attracting adults spawning more larvae