The Effect on Seed Production of Cutting Medicago sativa in Dry-hot Valley Region

The seed production perfotmeance of Medicago sativa in dry-hot valley region was studied.The results indicated that the seed production of Medicago sativa was improved after cutting 1 stubble and impeling the seeds maturitied on May in ensuing year;The average yield of 36.401 g/m2 for Hunter-river(74-55)seeds was the highest,and that of 31.727 g/m2 for Sa Lan na si(75-43)seeds was the second highest.