聚类分析是近十几年发展很迅速的一种新的统计方法,它的基本任务是将以考察的研究对象进行合理的分类。农业科研中常常遇到很多分区划类的问题,如:土壤类型的划分;作物品种类型的划分;地域生态类型的分类等等。应用聚类分析是解决这一类问题的有效方 Clustering analysis is a new statistical method developed rapidly in recent ten years. Its basic task is to classify the research objects under investigation. Agricultural research often encountered many zoning issues, such as: the classification of soil types; the division of crop types; the classification of regional ecological types and so on. Applying cluster analysis is an effective way to solve this kind of problem