中文摘要：

为探明凉山烤烟钾含量状况，试验采集凉山2006～2009年8个植烟县市烟叶样品共1318份，对烤烟钾含量的总体状况以及不同部位、品种、产地和年际间烤烟钾含量的变化特征进行了研究，并与国内外优质烤烟钾含量进行比较。结果表明：凉山烟叶钾含量平均值为2．22％，最小值为0．40％，最大值为4．08％，变异系数较大，为25．59％；部位间钾含量的分布特征表现为：下部叶〉中部叶〉上部叶；主栽烤烟品种中钾含量分布规律为：云烟87〉云烟85〉红花大金元；整体上凉山各植烟地区烟叶钾含量分布不均衡，以越西、冕宁钾含量最高，分别为2．64％和2．59％，会东县烟叶钾含量最低，为1．85％，年际间钾含量呈逐年下降的趋势。与国内外优质烤烟相比较，凉山下部叶钾含量处于中等水平，中部叶钾含量处于中等偏下水平，上部叶钾含量偏低。

英文摘要：

In order to ascertain the status of potassium content in flue-cured tobacco in Liangshan, the general status of potassium content in flue-cured tobacco and the change characteristics of potassium content in different positions and varieties of flue-cured tobacco, different producing areas and years were studied with 1 318 tobacco samples which were collected from eight tobacco planting counties in 2006-2009, and a contrast analysis was conducted between the potassium content in tobacco from Liangshan and that in high-quMity tobacco from China and abroad. The results showed that the average potassium content in tobacco from Liangshan was 2.22% with the minimum value of 0.40% and the maximum value of 4.08%, the coefficient of variation was large to 25.59%. The distribution characteristics of potassium content in different positions was lower leaf〉middle leaf〉upper leaf. The distribution characteristics of potassium content in main varieties was Yunyan87〉Yunyan85〉Honghuadajinyuan. In generally, the potassium content in tobacco from each tobacco-planting area of Liangshan distributed unevenly, among which the potassium content in tobacco from Yuexi and Mianning was the highest with 2.64% and 2.59%, respectively, and that from Huidong was the lowest with 1.85%. The potassium content in tobacco from Liangshan showed a downward trend year by year. In comparison with the high-quality flue-cured tobacco in China and abroad, the potassium content was middle level in lower tobacco leaves, middle-lower level in middle tobacco leaves and low in upper tobacco leaves.