人工林鼠害防治指标补充研究

Additional Research on Control Indexes for Rodents Damage in Artificial Plantation

通过主害期对目标鼠种和危害率的相关关系研究，提出了杉木、柳杉和油松的防治指标。在不同林龄分别是：１年～３年时目标鼠种鼠密度为１．７０、２．４０和１．７４；４年～６年时为０．９４、１．３和０．６２。

The control indexes are put forward according to the correlation of density of rodents pest with the damage rate of _ Cunninghamia laceolata,Cryptomeria fortunei and Pinus tabulaeformis forest.The indexes are rodents pest density 1.7%,2.4% and 1.74%,when the age of 3 species artificial plantation above are 1 to 3 years old.On the other hand,The indexes are 0.94%,1.3% and 0.62%,when the age are 4 to 6 years old.