红桦是我县天然林中常见的树种之一,多分布于海拔2000米左右的阴坡和半阴坡。其木材工艺价值高,是一种优良的用材树种。为了发展该树种,我县从1980年起连续两年育苗1.83亩,亩产苗量1.6万余株,初步取得了成效。其育苗方法简介如下:一、苗圃地选择圃地宜选在地势平坦、排灌方便、土层深厚的地方。二、种子的采集和贮藏1980年10月中旬,在海拔2000米的瓦房沟,采集红桦种子50斤,除掉夹杂物,放 Red birch is one of the common tree species in natural forests of our county, mostly distributed in the shady slopes and semi-shady slopes of about 2000 meters above sea level. Its high value of wood craft, is an excellent timber species. In order to develop the tree species, the county has been raising seedlings of 1.83 mu for two consecutive years since 1980 and has produced more than 16,000 mu of seedlings per mu and achieved initial success. The nursery methods are as follows: First, nursery to choose garden should be selected in the flat topography, irrigation and drainage convenience, deep soil areas. Second, the seed collection and storage In mid-October 1980, at an altitude of 2000 meters Wafanggou, collecting 50 pounds of red birch seeds, remove the inclusions, put