论文部分内容阅读
为了加速干旱阳坡的造林绿化速度,我们从1979年开始对容器苗的阳坡造林技术问题进行了试验研究。一、造林地的生境条件试验地位于大兴安岭中部西坡乌尔其汉林业局,东经121°26′,北纬49°29′之极旱阳陡坡中上部。坡度在20°~26°之间。土壤为花岗岩上发育的弱生草坡积石砾土。A_0层不明显,A层5厘米,砂土。B层65厘米,其中95%以上为石砾,可明显看出整块岩石原形,中间植物根系分布深达40厘米以上,以适应干旱环
In order to speed up afforestation and afforestation speed on arid and sunny slopes, we conducted a pilot study on the afforestation technology of container grasses in sunny seasons since 1979. First, the habitat conditions of the afforestation land are located in the upper part of the steep slope of the arid Yang at 121 ° 26 ’east longitude and 49 ° 29’ north longitude in the western part of Daxinganling. The slope is between 20 ° ~ 26 °. The soil is a weak grass slope plot gravel soil developed on granite. A_0 layer is not obvious, A layer of 5 cm, sand. B layer 65 cm, of which more than 95% for the gravel, it is clear that the whole piece of rock prototype, the root distribution of the middle plant more than 40 cm deep to adapt to the drought ring