为比较赤眼蜂与颗粒剂对玉米螟的防治效果,我们连续四年进行了田间试验,证明赤眼蜂对一代玉米螟的防治效果比颗粒剂好,而且对二代玉米螟也有一定的防效,同时,还能保护天敌和节省大量的投药用工。在放蜂区进行调查,赤眼蜂对一代玉米螟的卵粒寄生率为43.6～72.1％,对二代玉米螟的卵粒寄生 In order to compare the effect of Trichogramma and Granule on the control of Corn Borer, we conducted field trials for four years in a row, which proved that Trichogramma was superior to Granules in controlling the generation of Ostrinia furnacalis, Effective, at the same time, but also to protect natural enemies and save a lot of investment in labor. In the area of ​​bee-pollinators, the parasitism rate of Trichogramma ostriniae on the first generation of Ostrinia furnacalis was 43.6 ~ 72.1%