对四川省凉山彝族自治州的 5 6个苦荞麦栽培居群的 13个数量形状进行了聚类分析和主成分分析 .结果表明苦荞麦栽培居群分为 2个类群和少数过渡居群 .第 1个类群的苦荞麦栽培居群生长于低海拔地区 ,属于产量高的类型 .第 2个类群生长于高海拔地区 ,属于产量较低的类型 .因此 ,对苦荞麦品种资源的保护无论在高海拔地区或低海拔地区皆需进行 . The cluster analysis and principal component analysis of the 13 populations of 56 tibetal buckwheat cultivars in Liangshan Yi Autonomous Prefecture of Sichuan Province were conducted.The results showed that the populations of Tartary Buckwheat were divided into two groups and a few transitional populations.The first Tartary buckwheat cultivated in a group population grew at low altitude, belonging to the high yield type.The second group grows in the high altitude area, belongs to the lower yield type.Therefore, the tartary buckwheat variety resources protection both at high altitude Regional or low altitude areas are required.