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近年来,我区森林病虫害发生面积大,危害严重,每年发生面积达一千多万亩。由于各级领导的重视和业务部门的努力,我区的森林病虫害防治工作取得了较大的成绩。1983年防治面积达271万亩,比1982年增长28％,其中生物防治面积达41.9万亩,占防治面积的19％,比1982年增长89％。此外,还完成了全区森林病虫、药械和杨树病虫害专项普查;开展了松毛虫等综合防治试点;在生产性防治上利用飞机大面积喷洒马拉硫磷原油防治落叶松鞘蛾获得成功;对春尺蠖、松毛虫的防治也取得了一定经
In recent years, forest pests and diseases in our area have a large area and are seriously endangered. Each year, an area of more than 10 million mu has occurred. Due to the attention of leaders at all levels and the efforts of business departments, great achievements have been made in the prevention and control of forest pests and diseases in our area. In 1983, the control area reached 2.71 million mu, an increase of 28% over 1982; the biological control area reached 419,000 mu, accounting for 19% of the control area and an increase of 89% over 1982. In addition, a complete census of forest pests, drugstores and poplar pests was completed in the region; a comprehensive pilot program of prevention and control of pine caterpillars was carried out; success was achieved in the prevention and control of larch-shell larvae by spraying large-area aircraft with malathion crude oil on productive control ; On spring 蠖 蠖, pine caterpillar control also made a certain classics