论文部分内容阅读
胡杨(Populus eruphratica Oliv)主要分布在新疆、内蒙及宁夏的沙漠中,抗旱、抗寒、抗风沙、耐高温、耐盐碱、耐沙压,根蘖繁殖力强。1960年我们从甘肃安西引种,十几年来的育苗和栽植试验表明,胡杨完全适于我区干旱沙地和盐碱地生长。造林成活率高,在1965年连续大旱200多天的情况下,栽在地下水位很低的沙盖黄土上的胡杨成活率达84％,盐碱地成活率95％,而其他杨树的成活率最高才40％。1962年栽植在沙盖黄土上的胡杨,现在高4.7米,胸径10厘米,从1971年起已开始结实,并萌生出许多幼树。
Populus eruphratica Oliv is mainly distributed in the deserts of Xinjiang, Inner Mongolia and Ningxia. It has strong drought resistance, cold resistance, wind-blown sand, high temperature resistance, salt tolerance, sand tolerance and root tillering. In 1960, we introduced from Anxi, Gansu Province. After more than ten years of nursery and planting experiments, it shows that Populus euphratica is completely suitable for the growth of arid sand and saline-alkali land in our district. Under the condition of continuous drought of more than 200 days in 1965, the survival rate of Populus euphratica planted on sandy loess with low groundwater table is 84% and the survival rate of saline-alkali land is 95%, while the survival rate of other poplars Up to 40%. Populus euphratica planted on sandy loess in 1962, now 4.7 meters high and 10 centimeters in diameter, has begun to grow strong since 1971 and sprouted many young trees.