玉米螟(OStrinia nubilalis Hübn-er)是一种危害玉米及其它作物的世界性害虫。据报导,一般年份大田玉米减产一成,甜玉米可达四成。玉米螟取食玉米的芽和主茎,老龄时危害籽粒和影响授粉,并使玉米感染霉菌,严重时遭致毁灭性减产。长期以来,世界各国对防治玉米螟从各个方面进行 OStrinia nubilalis Hübner is a worldwide pest that harms corn and other crops. It has been reported that in the general year, the yield of field corn will be reduced by 10% and that of sweet corn will reach 40%. Corn borer takes corn shoots and main stems, harms grains and affects pollination in old age, and infects molds with corn, causing severe yield loss. For a long time, all countries in the world have carried out prevention and control of corn borer in all aspects