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玉米螟是黑龙江省玉米的主要害虫。据1986～1990年5年统计,平均每年发生1014万亩,防治457万亩,占发生面积的45％。其中生物防治只26.8万亩,仅占防治面积的5％。为了加快玉米螟生防步伐,认真落实“八五”期间在“东北玉米带,重点推广玉米螟生物防治(Bt制剂、白僵菌、赤眼蜂)技术”的要求,黑龙江省1991年首次组织了防治玉米螟“生防
Corn borer is the main pest of corn in Heilongjiang Province. According to the statistics from 1986 to 1990, the average annual occurrence of 10.14 million mu is 457 million mu, accounting for 45% of the occurring area. Biological control of which only 26.8 million mu, accounting for only 5% of the control area. In order to speed up the pace of biological control of corn borer and earnestly implement the requirements of “technology for biological control of corn borer (Bt preparation, Beauveria bassiana and Trichogramma) in the northeast corn belt during the Eighth Five-Year Plan”, Heilongjiang first organized in 1991 Prevention and control of corn borer "biological prevention