四川高寒牧区紫花苜蓿引进品种的筛选

2001-2004年,对11个紫花苜蓿Medicago sativa不同引进品种的生长特性和生产性能进行了观察和测定。结果表明:11个紫花苜蓿品种在川西北高寒区越冬率均达到90%以上;各品种引种第1年产量较低,次年开始增长,第3年产量达最高,随后开始下降;各品种干草产量差异大,3年平均产量最高的美标403 Z,为13 594.7 kg/hm2,比平均产量最低的超级阿波罗增产达49.8%,差异显著。

Varietal selection of alfalfa introduced to the alpine pastoral areas in Sichuan province

In 2001-2004,11 different introduced varieties of alfalfa were tested and observed on their growth and productive characters.The results indicated that: as for the 11 alfalfa varieties,their winter surviving rate in the north west Sichuan province reached over 90 percent;all these varieties had relatively low yield in the first year,it began to rise in the following year,and peaked in the third year,fell from then on;dry yield difference was great for all varieties,the highest for 3 year's average yield was Meibiao 403 Z,being 13 594.7 kg/hm~2,increasing yield by 49.8 percent above Superapolo whose average yield was the lowest,the difference was significant.