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通过对我省10年种烟土壤与烟叶含钾量的分析，及烤烟钾肥施用技术研究表明：种烟土壤速效钾含量较高，而烟叶含钾量偏低；单纯提高基把中钾的用量，达不到提高烟叶含钾量的目的。而在烤烟吸收钾高峰期前，采用根外追肥的方法，烟叶含钾量明显增加。
Through the analysis of 10 years of tobacco in our province soil and tobacco leaf potassium content, and flue-cured tobacco potash application technology research shows that: tobacco soil quick-acting potassium content is high, while tobacco leaf potassium content is low; simply increase the amount of potassium , Reach the purpose of raising the potassium content of tobacco leaves. In the flue-cured tobacco before the peak absorption of potassium, the use of root top dressing method, the potassium content of tobacco increased significantly.