湘西州烤烟钾含量分布及其影响因素

对湘西自治州烟叶钾含量分布特征及影响因素进行研究，结果表明，湘西州烤烟 B2F、C3F、X2F 等级烟叶钾含量平均值分别为1.56％、1.78％、2.08％，差异达极显著水平；在不同县之间以古丈县烤烟钾含量相对较高；烤烟钾含量空间分布呈斑块状。烤烟钾含量品种间差异无统计学意义；高、低海拔高度的烟叶钾含量相对高于中海拔高度的；种植在石灰土上的烤烟的钾含量要高于种植在红壤土上的。

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 B2F,C3F and X2F 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 to-bacco 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 to-bacco 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.