本研究采用Q技术聚类分析、主坐标分析和主分量分析,将我国北部16个苜蓿品种材料划分成4个类型组和5个类型,并用聚类图和排序图清楚地反映了类型组间、类型间及品种材料间的相互关系,在此基础上提出了品种材料分类系统方案;采用R技术主坐标分析找出了在分类研究中起重要作用的特征,并借助电子计算机实现了对供试材料的自动检索,打印出了分品种检索表。 In this study, Q-technology cluster analysis, principal coordinate analysis and principal component analysis were used to divide 16 alfalfa cultivars in northern China into 4 types and 5 types. , The type and the variety of materials between the relationship based on this proposed material species classification system program; the use of R-technology master-coordinate analysis to identify the classification of studies have played an important role in the characteristics of the use of electronic computers to achieve a Test materials automatically retrieve, print out sub-species search form.