鼠害对我区果树生产的为害时间较短,自七十年代初在加查县园艺场发现鼠害,目前已波及到郎县、米林、林芝、和工布江达果园。因没有引起足够的重视,果园鼠害有渐年加重的趋势。据调查,加查县园芒场曾因此损失2万多株苹果树和少量梨树;1978～1982年,林芝县果园三队一片约五亩地的苹果幼树遭到毁灭,到1985年又有300多株盛果期苹果树遭到毁灭。朗县、米林及工布江达县果园约有60％的苹果树受到不同程度的危害。每年,当青稞、小麦收割完后(9月中下旬),老鼠便在苹果树的根颈部掘穴越 Rodent damage to fruit production in our area is relatively short. Since the early 1970s, rodent pests have been found in the horticultural field of Gacha County. It has spread to Langxian, Millington, Nyingchi and Gongbujiangda orchards. Because of not paying enough attention, orchard rats have gradually increasing trend. According to the survey, Gansu County Garden has thus lost more than 20,000 lines of apple trees and a small amount of pear trees; 1978 ~ 1982, Nyingchi County, orchard three teams of about five acres of apple trees were destroyed by 1985 and More than 300 strains of apple trees have been destroyed. About 60% of the apple trees in Long County, Milin and Gongbu jiangda orchards are endangered to varying degrees. Every year, when barley and wheat are harvested (mid-to-late September), the mouse burrows at the root of the apple tree