在海拔３２００ｍ的环湖地区对７种多年生禾本科牧草进行了引种试验。经对各草种的生育期、株高、茎叶比、产草量、产籽量等生产性状测定分析。结果表明，７种多年生牧草中弯穗大麦草和多叶老芒麦各性状表现优良，可作为环湖地区改良退化草地的首选草种。其次为短柄鹅观草、糙毛鹅观草 Seven kinds of perennial grasses were introduced in the lake area of ​​3200m above sea level. After the grass species of growth period, plant height, stem and leaf ratio, grass yield, seed yield and other production traits analysis. The results showed that all the traits of bentley barley and multi-leafed barley in seven perennial grasses were excellent, which could be used as the preferred grass species for improving degraded grassland in the lake. Followed by short handle goose grass, rough wool Goose grass