稻瘿蚊是我县晚稻一大害虫,在晚稻秧田及本日前、中期为害较重.近年随着杂交稻大面积推广种植,其危害日趋严重.1986年晚稻全县约450亩杂交稻受害后被迫翻犁重种,秧田期标葱率高的达100%,本田严重的田块标葱率高达98.4%.稻瘿蚊的危害已成为发展杂交稻的主要障碍因素.为探索 Rice gall midge is a large pests of late rice in our county, late in the late rice seedling and heavy damage in mid-term.In recent years, with a large area of ​​hybrid rice to promote planting, its increasingly serious harm .In late 1986, about 450 acres of hybrid rice in the county damage Forced to plow a variety of seedlings, seedling period standard scallion rate of up to 100%, Honda serious field standard scallion rate as high as 98.4% .The harm of rice gall midge mosquito has become the main obstacle to the development of hybrid rice.In order to explore