应用气候生态聚类指导脐橙引种

.On Navel Orange Introduction by Cluster Analysis of Ecoclimate in Zhejiang

选取与脐橙生长结果相关的１４个气候生态因子，应用聚类分析对浙江柑桔区和国内外脐橙产区的５３个样点进行分区。选择气候生态最为近似的日本大分、静冈、和歌山、熊本和美国佛罗里达州作浙江脐橙引种种源地，引入在那里业已栽培成功的脐橙品种供浙江栽培。引种实践证明：应用气候生态聚类分析指导浙江脐橙引种，选育的品种符合高产、优质、抗逆、高效等柑桔综合育种目标。最后，讨论了聚类分析在引种上应用价值和局限，强调了生态因子选择和权重确定在聚类分析应用中的关键作用。

By 14 ecological factors related to growth of navel orange,the cluster analysis of 53 plots was earried out in Zhejiang’s citrus areas and in domestic and foreign navel orange areas.Difa,Shizuoka and Waka-yama in Japan and Florida in America,similar to Zhejiang in china in ecoclimate conditions,were selected as the provenance places for navel orange intro-duction into Zhejiang,The navel orange varieties cultivated successfully in the places could be introducted into Zhejiang,The introduction practice formore than ten years proved that breeding improved varieties by the clusteranalysis of ecoclimate with the characters of adverse resistance,high yieldand high quality,accorded with the breeding objective.In the last paragraph,this paper discussed the application values and the limitation of the clusteranalysis method in the introduction,and emphasized the critieal function ofselecting ecological factors and of determining the weight factors in thecluster analysis.