论文部分内容阅读
在干旱半干旱区造林,水份条件是决定性因素。为解决树木生长与干旱缺水的矛盾,意大利林学家利用机械钻到地下水位,解决了树木生长需水的问题。1983年我们引进这项技术,在永宁机械化林场和贺兰金山林场试验,试验面积134.8亩,造林4092株。试验地位于西干渠新垦区边缘,无灌溉条件,但有丰富的地下水资源。地下水位1.5～3米,矿化度0.46～1.13克/升,pH 值7.5。土壤
Afforestation in arid and semi-arid lands is a decisive factor. In order to solve the contradiction between tree growth and drought and water shortage, Italian forest scientists use mechanical drilling to groundwater level to solve the problem of water demand of trees. In 1983, we introduced this technology to test Yongning mechanized forest farm and Helan Jinshan forest farm with a test area of 134.8 mu and a plantation of 4092 trees. The experimental site is located at the edge of the newly reclaimed area of the West Main Canal with no irrigation conditions but abundant groundwater resources. Groundwater level 1.5 to 3 meters, salinity 0.46 ~ 1.13 g / L, pH 7.5. soil