论文部分内容阅读
1972年我所与伊金霍洛旗霍洛林场共同协作,在毛乌素沙地引种樟子松100亩。1977年11月调查,平均高0.78米,最高2.24米,平均地径3厘米,最大地径7.5厘米。经过几年试验,在流沙上栽植的樟子松,凡保存下来的幼树生长基本稳定,初步显示出了引种可望成功的可喜苗头。现将几年来的试验工作小结如下。一、引种试验地区的自燃概况霍洛林场位于毛乌素沙地的东北边缘,海拔高度1309.6米,属于鄂尔多斯干旱草原,频临半荒漠。该地区年平均温度6.1℃,绝对最高气温35.4℃,绝对最低气温-30℃。植物生长期140天左右。年平均降水量388.7毫米,主要集中在7、8、9三个月,占全年降水量的
In 1972, we cooperated with Horo Forest in Yijinhuoluo County to introduce 100 mu Scotch Pine in the Mu Us Sandy Land. November 1977 survey, an average of 0.78 meters high, the highest 2.24 meters, an average diameter of 3 cm, the maximum diameter of 7.5 cm. After several years of experiment, the planted Scotch Pine on quicksand, where the preserved young saplings grew basically stable, initially showing the gratifying success of the introduction of seedlings. Now years of experimental work is summarized as follows. First, the introduction of pilot area of spontaneous combustion overview Holo forest field is located in the northeast edge of the Mu Us sand, altitude 1309.6 meters, belonging to Erdos arid steppe, frequent semi-desert. The annual average temperature of 6.1 ℃, the absolute maximum temperature of 35.4 ℃, the absolute minimum temperature of -30 ℃. Plant growth period of about 140 days. The average annual rainfall of 388.7 mm, mainly in the 7,8,9 three months, accounting for the annual precipitation