烟草钾素营养与提高烤烟烟叶含钾量的研究现状与展望*

 概述了钾对烟草的生理功能及钾与烟叶外观质量和内在品质关系。从遗传因素、土壤环境条件、气候因子、施肥技术、栽培管理措施5个方面分析了影响烟叶钾素含量的主要因素。从钾肥施用技术、减少钾肥流失、培育钾高效型优良品种、使用植物生长调节物质4个方面归纳了近年来提高烟叶钾素含量的主要研究进展。在此基础上进一步探讨了目前提高烟叶钾素含量研究中存在的主要问题，并就现有技术水平，提出了今后工作的几点建议。

Potassium Nutrition of Tobacco and Improving Potassium Content in Flue-cured Tobacco Leaf: Review and Prospect

This paper summarized physiological function of potassium in flue-cured tobacco and the relationship of potassium content and internal or external quality of flue-cured tobacco. The main factors of influencing potassium content in flue-cured tobacco were explained. The factors included hereditary character, status of soil nutrients, climate, fertilizing and measures of cultivation. The principle progress of study on potassium content of flue-cured tobacco was induced from technique of potash fertilizing, lose reducing of potash fertilizer, breeding of flue-cured tobacco and applying of plant growth regulators in recent years. Some problem about improving the potassium content in tobacco leaf was explored, and in term of existent technique level, some proposition about further improving the potassium content in tobacco leaf was suggested.