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本文对生长比较稳定的人工草地和天然草地进行研究。结果表明，草本植物改土防蚀效益显著，土壤有机质含量提高１０％～１５６％，含水率提高５．９％～１２．８％，容重下降３．１％～１０．１％，孔隙度增大２．３４％～６７２％，透水速度提高７３．１４％～５５％，水稳性团聚体、团聚度分别提高１６．７２％～６７．１％和２４．２４％～１９３．０６％，分散率、侵蚀率分别下降０．４５％～１２．９％和１１．９７％～２１．４％。同林木相比，草本植物蓄水保土效益发挥较早，但不能抵抗强大径流冲击。林草间作才能达到治理水土流失的最佳效果。豆科和禾本科草改土防蚀功能各有特点，二者混播效果更好。
In this paper, relatively stable growth of artificial grassland and natural grassland research. The results showed that the improvement of soil anti-corrosion benefit of herbaceous plants was remarkable. The content of soil organic matter increased by 10% -156%, the moisture content increased by 5.9% -12.8%, the bulk density decreased by 3.1% -10.1% The degree of water increase was 2.34% ~ 672%, the water permeation rate was increased by 73.14% ~ 55%, and the water-stable aggregates and agglomeration degree were increased by 16.72% ~ 67.1% and 24.24% ~ 193 respectively .06%, dispersion rate and erosion rate decreased by 0.45% ~ 12.9% and 11.97% ~ 21.4% respectively. Compared with the trees, herbs play an earlier role in water and soil conservation, but can not resist the strong runoff impact. Intercropping forests and grasslands in order to achieve the best effect of soil and water erosion control. Legumes and grasses grass soil anti-corrosion function has its own characteristics, the two mixed better.