优质紫花苜蓿在宁夏引黄灌区的适应性研究

Adaptability Research of High Grade Alfalfa in Yellow River Irrigation Area of Ningxia

笔者在宁夏引黄灌区,以美国引进的14个紫花苜蓿品种为研究对象,连续3年测定分析其初花期的株高、单株分枝数、干草产量、鲜干比、茎叶比等生产性能指标,并进行灰色关联度分析,以期筛选出适宜宁夏引黄灌区及其周边地区种植的苜蓿品种,并为新品种的选育提供参考。结果表明,“55V48”的株高最高(94.79 cm);“SK3010”的单株分枝数最多(6.84);“巨人407”的干草产量最高(16.68 kg/hm~2),“4020MF”次之(16.63 kg/hm~2);“WL319HQ”的鲜干比最高、茎叶比最低,分别为5.24和1.39。综合评价结果显示,“4020MF”“皇冠”“WL363HQ”“BR4010”“巨能耐盐”等在宁夏引黄灌区表现较好,具有引种和推广价值。

Fourteen alfalfa(Medicago sativa) varieties introduced from America were used as research materials in Ningxia Yellow River irrigation area.In this study,the growth performance characters such as plant height,stem per plant,hay yield,fresh/dry and stem/leaf ratios of the early bloom alfalfa were measured in three consecutive years and analyzed by the grey correlative system to assess varieties comprehensively.The results showed that the plant height of M.sativa cv 55V48 was the highest(94.79 cm).M.sativa cv SK3010 showed the most stem per plant(6.84).M.sativa cv AmeriStand 407 had the highest hay yield(16.68 kg/hm~2) and M.sativa cv4020MF took the second place(16.63 kg/hm~2).M.sativa cv WL319HQ had the highest fresh/dry ratio(5.24) and the lowest stem/leaf ratio(1.29).The comprehensive evaluation results show that M.sativa cv 4020MF,Phabulous,WL363HQ,and BR4010 perform excellently in Ningxia Yellow River irrigation area,and deserve extension and utilization.