小麦褐瓣潜蝇生物学特性和防治技术研究

STUDY ON THE BIOLOGY OF AGROMYZA MOIBILIS MEIGEN AND ITS CONTROL

小麦褐瓣潜蝇ＡｇｒｏｍｙｚａｍｏｂｉｌｉｓＭｅｉｇｅｎ１年发生１代，以蛹在土中越夏、越冬，翌年３月上旬开始羽化为成虫，３月中旬至３月下旬为成虫盛发期，３月下旬至４月上旬为产卵盛期，４月中旬为幼虫危害盛期。主要危害剑叶，由叶尖向叶茎潜食危害，最初造成白色线状虫道，５天后隧道加宽，引起叶片局部或大部枯死，对小麦产量影响较大。小麦灌浆期是褐瓣潜蝇危害叶片的盛期。４０％氧化乐果１０００倍液，防治效果达９０％以上。

Agromyza mobilis Meigen is one of the important insect pests of wheat in Qianwei and Yibin counties of Sichuan province. A systematic study of the pest conducted in 1989 to 1992 showed that it has one generation per year, oversummers and overwinters as pupae under soil surface and emerges in early March next year. Most of the adults develop in mid and late March, lay eggs from late March to early April. The larvae cause severe injuries to the plants in mid April. The flag leaf of the plant suffers most when the crop is at milky maturity. Without adequate control of this insect, grain yield may drop sharply. Spraying of 40% omethoate gave a control efficiency of over 90%.