中文摘要：

根据在松嫩平原草地的野外实验研究，提出了改良重度盐碱化草地的新方法，即通过直接移栽羊草改良光碱斑，快速恢复草地植被．研究结果表明，移栽羊草的碱斑与对照区相比，土壤理化性质差异显著．碱斑移栽羊草后，明显改善了土壤的pH值和电导率；同时，利用羊草实生苗相对耐盐碱的特性，辅以简单的措施（如添加沙土），可使羊草在盐碱地自我繁殖，从而快速地恢复草地植被．这种方法成本低，操作简单，具有较大的推广潜力．

英文摘要：

Based on the field experiments on the alkali-steppe of the Songnen Plains,a new technique of rapidly restoring with Leyrnus chinensis was put forward. The experiments showed that the technique can be mitigate the alkali-steppe,and make degraded steppes to recover rapidly and efficiently. The research results indicated that there were significant differences in soil physical and chemical properties between the spots with cultivating L. chinensis and cultivating L. chinensis ＋ sand soil on the alkali spots,and the soil pH and electric conductivity in the cultivating L. chinensis became more and more suitable for plant growing. And also, due to the higher alkali-resistance of L. chinensis seedling and with effective measures of cultivating,the cultivated L. chinensis grew,disperse,and propagate easily, and finally the alkali-steppe were improved as soon. The new technique of combating alkali-steppe is considered as a potential measure because of its low economic cost and simple operation.