森林害鼠是广泛生活在人工林和天然次生林中的一大类小型啮齿类动物,具有适应性强和繁殖速度快的特点。它们啃食多种针、阔叶树和灌木的树根、树干、树枝的嫩皮和林木的果实、种子,经常造成大面积幼林的死亡和种子的歉收,对林木的危害十分严重,成为林业生产的一大灾害。我国林区害鼠的种类比较多,其种类和数量常随林区生态环境不同而有所差异。在东北林区常发生的种类有红背(鼠平)、棕 Forest pest rats are a large group of small rodents that widely live in plantations and natural secondary forests, with strong adaptability and breeding speed. They bite a variety of needle, broad-leaved tree and shrub tree roots, tree trunks, branches of the tender skin and forest fruits, seeds, often resulting in large areas of young forest and seed failure, the damage to the trees is very serious and become a forest production A big disaster. There are many species of harmful rats in our country’s forest area, and their species and quantity often vary with the ecological environment in the forest. In the northeast forest species often occur red back (mouse flat), brown