草甸草原区引种苜蓿适应性评价

Adaptability evaluation of introduced alfalfa in meadow steppe in Inner Mongolia

本研究对内蒙古草甸草原区引种9个苜蓿品种进行栽培试验,实验采用完全随机区组设计,通过对苜蓿枝条数、生产力和越冬率的测定,初步评价不同苜蓿品种在草甸草原区的适应性,旨在以不同指标之间的综合评定来探究当地苜蓿种植的方向。研究结果表明:不同品种枝条数不同,其中肇东苜蓿两年的平均分枝数达到103个/株,分枝数最低的是先行者苜蓿,两年的平均分枝数仅为44个/株,其它品种间差异不显著(P<0.05)。苜蓿生产力水平由高到低分别为:肇东苜蓿>苜蓿Beaver>苜蓿Rambler>苜蓿Nordica>龙牧801>先行者>中草3号>苜蓿Algoquin>敖汉苜蓿;其中肇东苜蓿年平均产量较高,为1 634.3kg/hm^2;这种苜蓿越冬率也较高,可达85%。说明在内蒙古草甸草原地区,这种苜蓿栽培早期的适应性较好,适合在当地大面积种植,提高苜蓿产量,为当地畜牧业发展提供帮助。

The adaptability evaluation on 9introduced alfalfa cultivars was conducted through completely randomized block design in meadow steppe area,Inner Mongolia.The branch number,productivity and winter survival rate were measured.The results showed that the average branch number of M.falcata cv.NeiMeng Zhaodong reached 103 per plant,and the lowest was M.sativacv.Firststype（44per plant）.Alfalfa productivity level from high to low was：M.sativacv.NeiMeng Zhaodong〉M.sativacv.Beaver 〉M.sativacv.Rambler〉M.sativacv.Nordica〉M.falcatacv.Longmu No.801〉M.sativacv.Firststype〉M.falcatacv.Zhongcao No.3〉M.sativa cv.Algoquin〉M.sativa cv.NeiMeng Aohan.In which,M.sativa cv.NeiMeng Zhaodong performed better,and the average annual yield was 1 634.3kg/ha.Meanwhile,his winter survival rates were also higher（85%）.