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针对太行山花岗片麻岩低山丘陵区水土流失严重，生态环境恶化的现状，通过对草木樨、紫花苜蓿、沙打旺与刺槐的不同搭配与种植方式的研究，发现刺槐与草木樨混种结构，尽管在造林初期林木的存活率及年生长量稍低，但在造林后4a的累计经济效益最高，可大大缩短造林成本的回收期，为一良好的林草立体种植结构。
In view of the present situation of serious soil erosion and aggravation of the ecological environment in the hilly area of granitic gneiss in Taihang Mountains, the study on the collocation and cultivation of Radix Astragali, Medicago sativa, Astragalus adsurgens and Robinia pseudoacacia Structure. Although the survival rate and the annual growth rate of forest trees are slightly lower in the early stage of afforestation, the accumulative economic benefits of 4a after afforestation are the highest, which can greatly shorten the payback period of afforestation cost and make a good three-dimensional plantation structure of forest and grass.