兴安落叶松鞘蛾防治指标模式的研究

Study on the Prevention Quota Model of Coleophora dahurica Falk

该文提出了兴安落叶松鞘蛾防治指标通式和计算式，以及此害虫危害等级的划分及其等级指标值。认为防治指标值只有在林分密度或林龄影响到防治成本的情况下，不同林分才有不同防治指标且防治指标值和害虫危害指标与林分立地指数无关；害虫危害等级指标与经济因素无关。

This paper puts forward the general and calculating formula of the prevention quo-ta model of Coleophora daghurica Falk,as well as the classification and quota value of the pest’sdamage. It is held that the prevention quota values are only different when stand density ortree’s age affect the prevention cost. Prevention values have relations with pest damage quotaand stand quota. Pest damage classification quota have no relations with econornic factors.