高寒地区栽培牧草产量及其营养价值研究

Studies on yield and nutritive value of cultivated forages in Alpine region

通过３ 年牧草引种栽培试验，间比淘汰，优选出无芒雀麦、老芒麦、甘肃红豆草、甘农１号杂花苜蓿４种适应性极强的优良牧草。经对其产草量和营养价值进一步研究，结果表明，牧草的产量和营养价值逐年增高，生产性能稳定，第５ 年产草量达３ 万ｋｇ／ｈｍ ２，是高寒地区建立人工草地的优良牧草。

After a 3-year trail experiment, 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 evaluated. The results showed that the yield and nutritive value increased with the increase of growth year. In fifth growing year, the yield reached 30 000 kg/hm 2 . Those varieties could be considered as good forage species for artificial grassland establishment in Alpine region.