黄河三角洲地区引种紫花苜蓿的灰色关联度分析与综合评价

Grey Correlation Analysis and Comprehensive Evaluation of Alfalfa Introduced in the Yellow River Delta

以21个紫花苜蓿品种为研究对象,测定并分析不同品种株高、干草产量等生产性能指标和粗蛋白、粗脂肪、酸性洗涤纤维等营养成分指标,采用灰色系统关联度理论进行综合评价。结果表明,苜蓿各品种在第1茬时株高和产量呈极显著差异(p<0.01),苜蓿年产量最高的是中苜5号,其次为中苜3号、耐盐之星、WL 414、赛迪7和3010;从生产性能和营养价值综合考虑,中苜5号、中苜3号、耐盐之星、3010、中苜4号表现突出,为当地建植苜蓿草地的优选品种。

The 21 alfalfa varieties were considered as the research objects,the production performance indexes including plant height,hay yield and nutrient components and nutritive indexes such as crude protein,crude fat and acid detergent fiber of different varieties were measured and analyzed,and the comprehensive evaluation was conducted by using grey correlation analysis.The results showed that there were significant differences in plant height and yield among alfalfa varieties at the first stubble(p<0.01).The highest annual yield of alfalfa was Zhongmu 5,followed by Zhongmu 3,Naiyanzhixing,WL 414,Saidi 7 and 3010.Based on the comprehensive consideration of production performance and nutritional value,Zhongmu 5,Zhongmu 3,Naiyanzhixing,3010 and Zhongmu 4 had outstanding performance which could be the preferred varieties for local alfalfa grass cultivation.