Agrotechnical Measures of Raising Tobacco Leaf Potassium Content in Yunnan

Field experiments in five location and plots with comprehensive agrotechnical measures plus auxiliary measures were conducted to study the raising of leaf potassium content.Results indicated that the potassium content of tobacco leaf was raised near or over 3% in Jiangchuan, treatments with 3 auxiliary measures significantly raised the leaf potassium content over 3.57%, while in Zhaotong, only one auxiliary measures got this effect, where both the treatments and check had a low leaf potassium contents.So in tobacco areas with higher elevation and colder climate, the raising of leaf potassium content is still a problem.