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苹果、梨、桃等幼龄(1—5年生)果树,在我区高寒干燥区和高寒半干燥区,越冬期间普遍发生抽干现象。据调查,日喀则幼树越冬抽干率高达65％,拉萨达23.6—31.6％,山南穷结县达25.5％,昌都县达20.5％。而在冬季比较温暖湿润的森林峡谷地区,如米林、林芝、加查、波密等地的幼树冬季则基本上无抽干现象。发生抽干的植株,残缺不全,树形紊乱,结果期延迟,有的果园栽植多年,结果甚少。有的地区由于严重的抽干,阻碍了果树生产的迅速发展。当前我区广大贫下中农遵照华主席“抓纲治
Apple trees, pears, peaches and other young (1-5 years) fruit trees, in our region alpine zone and alpine semi-dry zone, overwintering the general occurrence of pumping phenomenon. According to the survey, the saplings of Shigatse overwintered the rate of asphyxiation as high as 65%, Lhasa 23.6-31.6%, Shannan poor knot reached 25.5%, 20.5% of the county. In winter, warm and humid forest canyons, such as Milin, Nyingchi, Gacha, Bomi and other places of young saplings are basically no pumping phenomenon. Drained plants, incomplete, tree disorder, the result of delayed, and some orchards planted for many years, with very little result. In some areas, due to severe drafts, the rapid development of fruit tree production has been hindered. At present, the majority of poor and middle peasants in our region follow the principle of “grasping Gang rule.”