应用聚类分析和主成分分析法评价饲用高粱生产性能

摘要

对引进的16个饲用高粱新品种的株高、茎粗、分蘖数、产量等7个因子聚类分析，按照高度、茎粗、产量综合分为5类。在此基础上，对7个因子变量观测值进行主成分分析，前3个因子对所考察性状变异的累计方差贡献率达82.985%，较好地反映了所有性状大部分信息。根据品种在各因子上的得分值，对16个品种综合评价，综合评分按照聚类分析结果分类排序，确定建议示范推广品种为BJ0602、大卡Bgi Kahuna。%Using the methods of cluster analysis methods,7 factor of introducing 16 new forage sorghum varieties were selected,such as plant height,stem diameter,tiller number and yield etc,according to its height,stem diameter,yield divided into five categories.On this basis,the method of principal components analysis were adopted to 82.985% of previous 3 common factors,which reflected the most of the characteristic information. According to the scores of all varieties in all common factor,assessing the characteristic of 16 varieties,which sorted by comprehensive score and the result of cluster analysis,this results were used to determine popularizing and applying varieties were BJ0602,Calories Bgi Kahuna.