紫花苜蓿品质性状和农艺性状的相关性研究

Correlation analysis of main agronomic characteristics and quality characteristics of alfalfa varieties

应用灰色关联度分析方法,对适合沧州市的几个紫花苜蓿Medicago sativa品种进行分析,结果表明:各性状对干草产量的关联度由大到小依次是:分枝数>粗纤维含量>单株产量>株高>茎叶比>粗脂肪含量>粗蛋白含量;各性状对蛋白质含量的关联度由大到小依次是:株高>分枝数>粗纤维含量>粗脂肪含量>茎叶比>干草产量>单株产量;各性状对粗纤维含量的关联度由大到小依次是:干草产量>株高>分枝数>茎叶比>粗蛋白>单株产量>粗脂肪。试验结果为优质高产苜蓿品种的引种与选育提供了一定的理论参考依据。

The grey correlative analysis was used to determine the relationship between main agronomic characteristics and quality characteristics of alfalfa varieties growing well in the Cangzhou regions. This study showed that hay yield was contributed by the factors as following： the branches per plants 〉content of crude fiber〉yield per plant〉height〉ratio of stem to leaf〉content of crude fat〉 content of crude protein. The content of crude protein had a positive relationship with factors in order： height〉 branches per plant〉content of crude fiber〉content of crude fat〉ratio of stem to leaf〉hay yield per unit area〉 yield per plant. The content of crude fiber was controlled by hay yield〉height〉 branches per plant〉ratio of stem to leaf〉content of crude protein〉yield per plant〉content of crude fat.