In order to compare the physical characteristics of flue - cured tobacco in new tobacco growing areas (Puer, Lin-cang, Wenshan, Baoshan) and old tobacco growing areas (Kunming, Yuxi, Honghe, Dali, Qujing) of Yunnan province, 270 flue -cured tobacco leaf samples were collected from these tobacco - growing areas, and 13 physical characteristics indexes of these samples were analyzed by using multiple comparison and clustering analysis. The results indicated that; between new areas and old areas, there were significant differences in morphological indexes, filling power and equilibrium moisture content of tobacco leaves (P <0.05) , but there were no significant differences in some quality indexes and mechanical strength indexes of tobacco leaves. The physical characteristics of upper, middle and lower tobacco leaves in all tobacco — planting areas could be divided into 4 categories when Chi - square distance was about 1.26, 1.89 and 1.61, respectively.%以云南4个新烟区(普洱、临沧、文山、保山)和5个老烟区(昆明、玉溪、红河、大理、曲靖)的270份烤烟样品为试验材料,对样品的13种物理特性指标进行了多重比较和聚类分析.结果表明:新烟区、老烟区烟叶在形态特性指标、平衡含水率、填充值上的差异达到了显著水平,但在部分机械加工性能指标、叶片质量指标上的差异未达到显著水平；当卡方距离分别为1.26、1.89、1.61左右时,新老烟区上部叶、中部叶、下部叶的物理特性分别被分为4类.
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