黑龙江省林业厅根据林业部森林害虫综合防治的指示精神,结合本省的具体情况,参照东北林业大学学报发表的科研成果,于1987—1988年选择东部区尚志、林口 桦南三个县的落叶松毛虫发生区和西部平原兰西、林甸两个县的杨树三种检疫害虫重灾区为示范点,开展了综合防治工作。经过两年的实践, According to the directives of the Ministry of Forestry on comprehensive prevention and control of forest pests and according to the specific conditions of the province and referring to the scientific research achievements published in the Journal of Northeast Forestry University, the Forestry Bureau of Heilongjiang Province selected from 1987 to 1988 Shanglao, Linkou Huanan three counties larch Caterpillars and the western plains Lanxi, Lindian poplar three quarantine pests hit the demonstration area, to carry out comprehensive prevention and control work. After two years of practice,