牧草种质资源的抗旱性随牧草的生态类型、种类不同而异。用4种方法对14种牧草鉴定的结果表明,“反复干旱法”和“电导仪法”对6种禾本科牧草测定的结果最为理想。它们经3次反复干旱处理后,旱生类型的冰草、羊草的植株成活率最高,分别为63.13%和58.90%;湿生类型的鹅头稗全部死亡。经不同干旱处理后,用电导仪测得的冰草、羊草细胞质膜的伤害率最小,分别为9.42%和11.13%;鹅头稗的伤害率最大,为62.69%。 The drought resistance of forage germplasm resources varies with the ecological type and species of forage. The results of four methods for the identification of fourteen herbage showed that the results of the “repeated drought” and “conductivity meter” methods for the determination of the six species of grasses were the best. After three times of repeated drought treatment, the survival rates of drought-grown grass and chrysanthemum were the highest, 63.13% and 58.90%, respectively; all the wet-type goosegrass died. After drought treatment, the injury rate of the plasma membrane of L.grass and L. chinensis measured by the conductivity meter was the lowest, accounting for 9.42% and 11.13%, respectively. The damage rate of E. przewalskii was 62.69%.