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为深入了解中国烤烟钾含量的区域特征和分布情况,2003~2006年连续4年在全国主要烟区进行调查取样,利用调查获取的2 712份烤烟样品数据,对中国烤烟钾含量的基本统计特征、地区差异、品种差异和部位差异进行了研究。结果表明,我国烤烟钾含量普遍偏低,钾含量<1.0%的烤烟样品占2.36%,钾含量在1.0%~2.0%的烤烟样品占57.08%;我国烤烟钾含量在烟区、品种、部位间存在显著或极显著差异,表现为南方烟区烤烟钾含量高于北方烟区,不同品种在不同烟区的钾含量表现存在一定的差异,不同部位烤烟钾含量表现为下部叶>中部叶>上部叶;钾含量偏低的烤烟和钾含量极低的烤烟主要分布在北方烟区和南方烟区中的云贵烟区,分别达77.52%和96.88%。
In order to gain a better understanding of the regional characteristics and distribution of potassium content in flue-cured tobacco in China, sampling was conducted in the main tobacco growing areas of China for 2003-2006 for 4 consecutive years. Based on the survey data of 2 712 flue-cured tobacco samples collected, , Regional differences, variety differences and site differences were studied. The results showed that the content of potassium in flue-cured tobacco was generally low in China, with 2.36% of samples containing less than 1.0% potassium and 57.08% of samples containing 1.0% -2.0% of potassium. The content of potassium in flue- There was a significant or extremely significant difference in potassium content in flue-cured tobacco in the southern part of the tobacco growing area, while potassium content in different parts of the flue-cured tobacco showed some differences. The potassium content in different parts of the flue-cured tobacco showed lower leaves> middle part> The flue-cured tobacco with low potassium content and the extremely low potassium content were mainly distributed in the Yunnan-Guizhou tobacco-growing areas in the northern and southern tobacco growing areas, reaching 77.52% and 96.88% respectively.