黄河上游高寒地区建植人工草地引种试验

Forage introduction experiment for sown pasture establishment in alpine areas of Yellow River's upper reaches

对8种多年生禾本科牧草品种在黄河上游高寒草地进行人工草地引种试验。结果表明:当年均出苗且生长良好,但种子不能成熟,只能达到拔节期;第2年越冬率达90%以上,无芒雀麦Bromusinermis,垂穗披碱草Elymusmutans,多叶老芒麦E.exceisns,老芒麦E.sibiricus青干草产量均达3000kg/hm2以上,冷地早熟禾Poacrymphila,草地早熟禾P.pratensis青干草产量在1500kg/hm2左右;种子成熟好的有冷地早熟禾、多叶老芒麦、老芒麦、垂穗披碱草,说明供试的8种多年生禾本科牧草品种在青海省黄河上游海拔3400m左右的地区推广种植,效果良好。

8 perennial forage grass varieties were introduced for sown pasture establishment on alpine grassland of Yellow Rivers upper reaches. The results indicated that: they germinated and grew well in the 1st year but seed cannot mature, only grew to jointing stage; the winter surviving rate reached to over 90 percent, fresh dry yield of Bromus inermis, E.mutans, E.exceisns, E.sibiricus reached (over) 3 000 kg/hm^2,fresh dry yield of Poa crymphila, P.pratensis was about 1 500 kg/hm^2;seeds of Poa crymphila, E.exceisns, E.sibiricus, E. Mutans grew well, meaning a good result for the 8 introduced perennial forage grass varieties to be extended and planted in upper reaches of Yellow River in Qinhai province, around 3 400 m altitude.