近年来,吉林省松辽平原广大地区,随着玉米种植面积的扩大,尤其在栽种杂交玉米后,玉米螟Ostriniae furnacalis Guenee逐年趋于严重。过去曾研究在玉米心叶末期撒施颗粒剂进行防治,效果虽较好,但由于各种原因,未能广泛应用。在玉米螟第一代卵出现期间,寄生于玉米螟的赤眼蜂种类和数量极其贫乏。曾数次 In recent years, in the vast area of ​​Songliao Plain in Jilin Province, Ostrinia furnacalis Guenee tends to become more and more serious year by year with the expansion of corn planting area, especially after the hybrid corn is planted. In the past had studied the dissemination of granules at the end of corn leaf heart control, although the effect is good, but due to various reasons, not widely used. Trichogramma parasites on the corn borer species and the number of extremely poor during the first generation of corn borer eggs. Several times