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赤松毛虫、油松毛虫和落叶松毛虫在我省均有发生,以赤松毛虫为甚。每年成灾面积50余万亩,防治费用达百万余元,并影响木材生产、和生态环境的相对稳定。30多年来,松毛虫均为我省森林害虫防治重点,至今未能控制其成灾,其因何在?笔者认为,过去对待松毛虫,着眼于害,着手于杀,没有把它与种群、生物群落以及生态系统联系起来。又因防治对策不良,方法不当,破坏了森林生态系统的相对稳定,失去自控能力,反而使虫灾越来越重。
Dendrolimus caterpillars, pine caterpillars and larch caterpillars have occurred in our province, to Dendrolimus caterpillars. Each year more than 50 million mu of disaster area, prevention and control costs up to 1 million yuan, and affect timber production, and the relative stability of the ecological environment. For more than 30 years, pine caterpillars are the focus of forest pests prevention and control in our province, so far failed to control its disaster, what is the reason? I believe that in the past to deal with pine caterpillars, focus on harm, to kill, did not put it with populations, Communities and ecosystems. Because of poor control measures, improper methods, undermining the relative stability of forest ecosystems, loss of self-control ability, but more and more pests.