【摘要】 为筛选出适宜新疆北疆地区种植的苜蓿品种，选取国内外32个紫花苜蓿品种，利用DPS9.5数据处理系统软件对不同品种的丰产性和稳产性进行比较分析。结果表明：不同年份苜蓿年产量以及各品种之间存在极显著差异(P<0.01);不同品种干草产量随着生长年限的延长表现出先升高后降低趋势，所有参试苜蓿品种中甘农4号、MF4020、甘农5号4年年产量之和排名前3位，分别达58960.60、58051.54、57868.68 kg/hm~2;各茬次干草产量总体呈现出第1茬>第2茬>第3茬的趋势，其中第1茬产量占全年总产量比重较高，为44.1%～53.2%;各茬次产量与年产量基本呈极显著正相关(P<0.01),第1茬与年产量之间的关联度最高，随着茬次的增加关联度总体上呈下降趋势，且第2年年产量与总产量关联度最高。综合4年试验结果得出，甘农4号、MF4020、甘农5号3个品种的丰产性和产量稳定性优于其他品种，适宜在新疆北疆地区推广种植。更多还原

【Abstract】 To select suitable alfalfa(Medicago sativa) varieties for planting in the northern region of Xinjiang, 32 alfalfa varieties from domestic and foreign sources were chosen, and their yield and stability were analyzed and compared using DPS 9.5 data processing system software. The results showed a significant variation in the annual yield of different alfalfa varieties across multiple years(P < 0.01). The annual yield of different alfalfa varieties exhibited a trend of initially increasing and subsequently decreasing with prolonged growth period. Among the 32 alfalfa varieties, Gannong No. 4, MF4020, and Gannong No. 5 ranked top three in the sum of annual yield over four years, with the values of 58960.60, 58051.54, and 57868.68 kg/hm~2, respectively. Overall, the first cutting had the highest hay yield, followed by the second and third cuttings, with the first cutting contributing 44.1%～53.2% of the total annual hay yield. A significant positive correlation was observed between the hay yield of each cutting and the annual hay yield(P < 0.01), with the first cutting showing the most significant correlation. However, a decreasing trend in the correlation coefficient was observed from the first to the third cutting, and the highest correlation was found between the annual hay yield of the second year and the total yield. In conclusion, among the 32 varieties evaluated, Gannon No.4, MF4020, and Gannon No.5 exhibited higher yield and stability and thus, are more suitable for cultivation in the northern region of Xinjiang.更多还原