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试验结果表明，皖南植烟红壤的烟叶含钾量随施钾量的增加而增加．烟株成熟期根系附近土壤速效钾、交换性钾含量与烟叶含钾量呈明显正相关．增加钾肥用量可以降低烟叶钙含量，提高烟叶Ｋ／Ｃａ值．烟叶氮和烟碱含量随施钾量增加有下降的趋势．施钾量与烟叶还原糖的相关性不明显．
The results showed that the leaf potassium content of tobacco planting red soil in southern Anhui increased with the increase of potassium application. There was a significant positive correlation between soil available potassium and exchangeable potassium content and potassium content in tobacco leaves at the mature stage of tobacco plants. Increasing the amount of potassium fertilizer can reduce the calcium content of tobacco leaves and increase the K / Ca value of tobacco leaves. The contents of nitrogen and nicotine in tobacco leaves decreased with the increase of potassium supply. The correlation between potassium application and reducing sugar was not obvious.