高寒山区抗寒苜蓿引种筛选试验

从36个苜蓿品种中筛选出适宜海拔2550－2800m的高寒山区种植的苜蓿7个，采取灌冬水的措施，当年越冬率在53％－92％。第2年越冬率在76．6％－100％，年产干草5736．0－11985．5kg/hm^2。第3年产干草在3510．8－12000.8kg/hm^2，使苜蓿高海拔、高寒山区推进，对于解决高寒山区特别缺乏优良豆科牧草问题以及对于今后草地更新可资利用的草种具有一定的意义。

The introduction and screening experiments of cold-resistant alfalfa in alpine region

From 36 alfalfa cultivars, 7 were screening out for suitable planting in alpine region with an altitude of 2 550～2800 m. The overwintering rate in the same year reached 53%～92% and 76. 6%～100% in the second year. The annual production of hay was 5736.0～1 198. 5 kg/hm2, and 3 510. 8～12 000 kg/hm2 in the third year. It is considered that this experiment has certain significance in solving the lack of excellent leguminous forages and renewing the useful species in alpine regions.