凉山亚热带区紫花苜蓿引种筛选试验

2005-2006年通过对11个不同秋眠级紫花苜蓿Medicago sativa品种的生长特性及生产性能等方面的观察测定,结果表明,不同秋眠级品种在凉山亚热带地区能顺利越冬越夏,3-5月能顺利开花结实,种子成熟率高;其生长速度和产草量均是非秋眠级＞半秋眠级＞低秋眠级,主要差异表现在秋冬季,再生速度和生物量差异极显著(P＜0.01).在凉山亚热带地区宜种植非秋眠性的苜蓿品种(如四季绿、WL414、盛世)及部分适应性好、产量高的半秋眠级品种(如威可),低秋眠级品种在该地高海拔区的适应性有待进一步研究.

Introduction and selection experiment of alfalfa in subtropical area of Liangshan

Growth characteristic and productivity of 11 different autumn dormancy alfalfa breeds were observed and determined from 2005 to 2006.The result indicated that alfalfa varieties with different autumn dormancy could smoothly survive winter and summer in subtropical area of Liangshan,flowering and setting seeds in 3-5 months with high seed maturity.Non-dormancy varieties had the highest growth speed and fresh yield,followed by half dormancy and low dormancy ones.Significant difference among these varieties was observed on re-growth speed and biomass in autumn and winter.Non-dormancy varieties such as Siriver,Millennium,WL414,and some half dormancy varieties with good adaptability and high yield(such as Verko) were suitable in subtropical area of Liangshan.The adaptability of lower autumn dormancy cultivars to high altitude area needs further research.