1975年开始至1983年止,我县共营造湿地松林60余万亩,连片幼龄林占50%,仅1982和1983年就有20—25万亩发生松毛虫为害,其中2万亩是重灾区,危害较为严重,随着湿地松林逐年扩大,防治松毛虫亦势必成为一项重要任务。在省、市防治站支持下,1981年—1984年间,全县进行飞机和人工超 From 1975 to 1983, a total of more than 60 million mu of wetland pine forests were constructed in our county. Contiguous young forest accounted for 50%. In 1982 and 1983, there were 20-25 million mu of pine caterpillars, of which 20,000 mu were Hardest hit, harms more serious, with the wetland pine forest has expanded each year, the prevention and control of pine caterpillars also bound to become an important task. In the province, city control station support, 1981 - 1984, the county aircraft and artificial super