介绍冬季严寒地区防止苹果幼树抽干的一种方法宁夏银南地区，冬季寒冷，最低气温达－３０．６℃，冻土层厚空为８０—１００厘米，开春季节风沙频繁，土壤解冻迟，降水量少。３—４年生苹果幼树由于主干较粗，树体难以下压，不能埋土防寒越冬。若露地越冬，果树根系在冬春... A method to prevent the winter cold apple tree saplings a method Ningnan Yinnan area, the winter cold, the minimum temperature of -30.6 ℃, permafrost thickness of 80-100 cm, frequent spring windy season, thawed soil later , Less precipitation. 3 - 4-year-old apple tree due to the thick trunk, the tree is difficult to under pressure, can not be buried cold winter. If the open winter, fruit trees in spring and winter ...