高寒地区优良牧草的筛选及生产性能研究

Studies on screening and productiveness of fine forages in alpine region

为解决高寒牧区冬季家畜补饲需要 ,进行了优良牧草的引种栽培及生产性能的研究。结果表明 ,优选出的无芒雀麦、老芒麦、甘肃红豆草和甘农 1号杂花苜蓿的干草产量在第 6年仍然能分别达到 33170 .0、31133.3、10 0 56.0和 110 77.3kg/ hm2 ,粗蛋白质产量最高的是老芒麦、最低的是甘肃红豆草 ,分别是 50 59.9和 1490 .9kg/ hm2 。牧草产量从栽培第 2年开始逐年增加 ,第 6年的产量是第 1年的 12～ 2

Studies on introduction and cultivation as well as productiveness of fine forages were carried out in order to solve supplementary problem of forage at winter season in alpine region. The results showed that some good adaptability varieties as Bromus inermis, Elymus sibiricus, Onobrychis viciaefolia cv. Gansu and Medicago sativa cv. Gannong No.1 were screened and their yield and nutritive value were maintained in the sixth growing year, the yield reaching 33 170.0 、 31 133.3 、 10 056.0 and 11 077.3 kg/hm 2 respectively. Those varieties could be considered as good forage species for spring winter forage settlement and artificial grassland establishment in alpine region.