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绰源林业局于１９９２～１９９４年间落叶松毛虫（Ｄｅｎｄｒｏｌｉｍｕｓｓｕｐｅｒａｎｓ）猖獗成灾。由于长期化学防治，不仅松毛虫的抗药性增大，而且污染了环境，破坏了生物多样性。为此，我们于１９９３～１９９４年间用Ｂｔ制剂进行了防治试验。湖北农科院生物农药厂生产的Ｂｔｋｕｒｓｔｒａｋｉ亚种血清型Ｈ３ａ３ｂ防效较好，地面防治６～７龄松毛虫（１００倍液）在日平均温度１６．５℃时，死亡率在８０％以上，南开大学生产的Ｂｔｋａｎｙａｅ亚种血清型Ｈ４ａ４ｃ防治落叶松毛虫３～４龄幼虫、稀释５０倍液进行低溶量飞防效果可达７５．２％。
Chuk Yuen Forestry Bureau in 1992 ~ 1994 Dendrolimusssuperans rampant disaster. Due to long-term chemical control, not only the resistance of pine caterpillars increases, but also pollute the environment and undermine the biological diversity. For this reason, we carried out the control experiment with Bt preparation from 1993 to 1994. Hubei Academy of Agricultural Sciences biopesticide plant production of Btkurstraki subspecies serotype H3a3b better control effect, the ground control 6 ~ 7 instar Dendrolimus (100 times) at a daily average temperature of 16.5 ℃, the mortality rate of 80% or more, Nankai University production of Btkanyae subspecies serotype H4a4c control 3 ~ 4 instar larvae of larvae, diluted 50 times the low-dose anti-flying effect of up to 75.2%.