Distribution of Potassium Content of Flue-cured Tobacco and Its Influencing Factors in Xiangxi

In order to understand the distribution status of potassium content of flue-cured tobacco in Xiangxi,the potassium distribution characteristics and influencing factors were analyzed. The results show that the mean of potassium content in the flue-cured tobacco leaf of B2 F,C3F and X2 F grade were 2. 16%,1. 76%,1. 68%,respectively. There were extreme significance difference among grades. There were extreme significance difference in the potassium content of flue-cured tobacco among counties and Guzhang county was relatively higher than other counties. The spatial distribution of potassium content of flue-cured tobacco were plaque. There were not significance difference in the potassium content of flue-cured tobacco among vaiieties. The potassium content of flue-cured tobacco planting in high elevation and low elevation were higher than middle elevation. The potassium content of flue-cured tobacco planting in lime soil were higher than red soil.