西伯利亚松毛虫的幼虫是西伯利亚和远东针叶林的最危险的害虫。目前正广泛地进行着利用食虫细菌防治松毛虫的试验(E.B.塔拉拉耶夫杆菌等)。但是实践证明,食虫细菌的效用主要表现在防治老龄幼虫方面,而幼龄幼虫对细菌制剂的抵抗能力较强。此外也并未证明,疫病会从处理过的森林地段向未处理 The larvae of the Siberian Dendrolimus are the most dangerous pests in the Siberian and Far Eastern coniferous forests. At present, the test of prevention and control of pine caterpillars by using the insect-borne bacteria (E. B. Taraayev, etc.) is being widely conducted. However, practice has proved that the effectiveness of carnivores bacteria mainly in the prevention and control of aging larvae, while young larvae are more resistant to bacterial agents. Nor has it proved that the disease will move from the forested area to the untreated area