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对沿海滩涂地区苜蓿根系生长发育的特征、根系生长发育对地上部分的影响以及与土壤之间的关系进行了研究。结果表明，由于潜水水位高、土壤质地粘重，苜蓿根系主要分布于０～３０ｃｍ土层内；主根受到潜水及盐分伤害后，诱导其再生出大量侧根系统，说明侧根发达是苜蓿适应该地区的主要特征之一。根系生长发育与地上部分的生长呈负相关。根系统对土壤有一定的改良作用，尤其以０～３０ｃｍ土层盐分的下降和有机质含量的增加最为显著。
The characteristics of alfalfa root growth and development, the effect of root growth and development on the aerial part and the relationship with the soil were studied. The results showed that the roots of alfalfa mainly distributed in 0 ~ 30cm soil layer due to the high diving water level and soil texture. After the main roots were submerged and salted, they were induced to regenerate a large number of lateral root systems, indicating that lateral root development is suitable for alfalfa One of the main features. Root growth and development were negatively correlated with the growth of aerial parts. The root system has a certain improvement on the soil, especially in 0 ~ 30cm soil salt decline and organic matter content increase the most significant.