The experiments were conducted to study changes in content of Carbohydrate and activities of protecting enzyme in root of Clinelymus nutans planted in differently treated soils during the germination in spring; The results showed:(1) The more the forage's root kept Carbohydrate the higher the activities of protecting enzyme were in winter,the earlier it ger-minated and the more hardy it was in spring.(2) The contents of soluble sugar an activities of SOD, POD in root of Alpine forages were reduced with incr...