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通过对嫩江大堤护坡植物根系及土壤抗冲、抗蚀及抗剪强度的测定分析，发现同一地段土壤的抗冲、抗蚀（水稳性）指数及抗剪强度均是表土层大于底土层。植物根系有较强的固持土壤功能，抗冲指数与根长、根量间有明显的相关性，单相关系数分别为０．９１４６和０．８１９７。有机质含量高的土壤抗蚀性强，水稳性指数大。水稳性指数与有机质含量间的相关系数为０．９１３２，与根长和根量的相关性相对较低，单相关系数分别为０．８３１７和０．８０９１。土壤稳定性与植物根量关系密切，根量大，其抗剪强度就大，相关系数为０．９８１４。在现有的植物中，牛毛草地抗蚀能力最大，其固土护坡护堤功能最强，应大力推广
Through the analysis and analysis of the impact resistance, corrosion resistance and shear strength of plant roots and soil in the Nenjiang River dike revetment, it is found that the index of anti-erosion and erosion resistance (water stability) and the shear strength of the soil in the same section are all higher than the subsoil. The root system of plants had strong soil function, and the correlation between the index of impact and root length and root volume was significant. The single correlation coefficient was 0.9146 and 0.8197 respectively. Soil organic matter with high soil erosion resistance, water stability index. The correlation coefficient between the water stability index and the organic matter content was 0.9132, which was relatively lower than the root length and the root volume. The single correlation coefficients were 0.8317 and 0.8091 respectively. The soil stability is closely related to the plant root mass. The root mass is large, the shear strength is large, and the correlation coefficient is 0.9814. Among the existing plants, Niu Mao grass has the highest corrosion resistance and the strongest slope protection berm has the strongest function and should be vigorously popularized