近几年北方玉米田广泛利用赤眼蜂防治玉米螟,地区间相互引进蜂种,其中存在着选用合宜的蜂种以获取较好的防治效果问题。1974年我们在开门办学中,深入农村,调查了天津自然界寄生玉米螟卵的赤眼蜂种类,同时鉴定了自河南省开封县、兰考县引入天津防治玉米螟的赤眼蜂,以及河北省博野县、唐山市郊区为防冶玉米螟繁殖的赤眼蜂。我们观察到天津自 In recent years, extensive use of red corn borer in northern corn borer prevention and control of corn borer, the introduction of bee species between regions, including the use of appropriate bee species to obtain better control effect. In 1974 we opened the door to school, in-depth rural areas to investigate the nature of Tianjin, parasitic corn borer Trichogramma species, at the same time identified from Kaifeng County, Henan Province, Lankao County, Tianjin introduced the prevention and control of corn borer Trichogramma, and Hebei Province Bo Yexian, Tangshan suburbs for the prevention of corn borer breeding Trichogramma. We observed Tianjin since