1982—1936年,在宁夏高寒山区隆德县,对冬麦苗期重要害虫麦种蝇进行了生活年史、习性、危害损失等方面的研究。此虫1年1代,以卵态幼虫在土内越冬,冬麦返青后幼虫蛀入分蘖节食害,造成大量死苗。成虫卵巢发育缓慢,羽化后经50天左右才交尾产卵。本文报道麦种蝇生物学及其对小麦的危害,并提出以苗被害率15％为防治阈限。 From 1982 to 1936, in Longde County, an alpine mountainous area in Ningxia, the study was conducted on the life history, habits and damage of wheat seed flies, which are important pests of winter wheat. This worm 1 year a generation to oval larva overwintering in the soil, winter wheat regreening moth into the tillering dieting, resulting in a large number of dead seedlings. Ovary adult development is slow, after emergence by about 50 days before mating tawny. This paper reports the biology of wheat germ and its harm to wheat, and puts forward that the rate of seedling damage is 15% as the control threshold.