为探讨保山烟区主栽品种K326、红花大金元和云烟87的海拔适应性，在其它栽培条件一致的前提下，分别在保山市腾冲和昌宁县的4个种烟乡镇，以每100 m为海拔梯度，从海拔1450~2150 m分水稻土和红壤共设置48个试验点，分析了海拔和土壤对3品种烟叶物理性状和化学成分的影响。结果表明，在一定海拔范围内，烟叶开片度、总氮、钾、烟碱与海拔呈显著或极显著负相关，总糖和还原糖与海拔呈显著或极显著正相关；海拔因素对烟叶物理性状和化学成分的影响效应大于土壤因素；K326和红花大金元受海拔因素影响较大，而云烟87受海拔因素影响较小；K326和红花大金元在海拔1400~1800 m烟叶可用性高于或显著高于1800~2200 m海拔。%Altitude suitability of K326, Hongda and Yunyan87 in 4 main tobacco growing townships in Tengchong and Changning counties of Baoshan municipality were studied. Data were collected from experiments carried out in 48 sites of paddy or red soil of every 100m within altitude range of 1450m to 2150m, where other cultivation conditions were as consistent as possible. Effects of altitude and soil type on physical properties and chemical components of flue-cured tobacco were analyzed. Results showed that within altitude range of 1400m to 2200m, significant (p<0.05) or highly significant (p<0.01) negative correlations existed between altitude and ratio of leaf length to width, total N, K and content of nicotine. Significant (p<0.05) or highly significant (p<0.01) positive correlations existed between altitude and content of total sugar and reducing sugar. The effect of altitude on physical properties and chemical components were higher than that of soil. K326 and Hongda were more sensitive to altitude than Yunyan87. Leaves of K326 and Hongda from 1400m to 1800m altitude were of better industrial value (p<0.05) than that from 1800m to 2200m.
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