为解决陇中半干旱黄土丘陵地区水土保持林草措施成活率低、保存率低、效益低的问题,我站选在具有代表性的定西县安家沟流域进行了植物对位配置试验研究。经过六年的工作,初步得出了具有一定应用价值的结论和措施对位配置方案,并在定西七县得到了较大面积推广。现将我们试验和推广的情况介绍于下。 一、在相同降水条件下,不同地形部位存在着不同的生境条件 In order to solve the problems of low survival rate, low conservation rate and low benefit of soil and water conservation forest and grass measures in semi-arid loess hilly region of Longzhong, we conducted a pilot study on the allocation of plants in the Anjiagou Valley of Dingxi County. After six years of work, preliminary conclusions have been drawn that have certain application values ​​and measures for the allocation of programs, and have been popularized in a large area in Dingxi seven counties. Now we test and promote the situation introduced below. First, under the same precipitation conditions, different habitats exist different habitat conditions