广西百色烟区烟叶钾和氯含量特征研究

 为深入了解广西百色烟区烟叶钾、氯含量的分布情况，2009年和2010年在百色主要烟区进行调查取样，利用获取的110份烤烟样品数据，研究了广西百色烟区烟叶钾、氯含量及钾/氯特征。结果表明，百色烟区烟叶钾含量较高、氯含量偏低、钾/氯适宜，钾含量<2%的样品占12.73%，氯含量< 0.3%的样品高达73.63%，烟叶钾/氯≥12的样品占30.91%。百色烟区烟叶钾、氯含量在不同植烟县、不同部位、不同品种、不同耕作模式间存在差异，表现为隆林、田林等县钾含量较低，各县氯含量总体偏低，仅西林县氯含量的适值样品率达到75%；中部烟叶平均钾含量略高于上部叶，但其氯含量低于上部叶；云烟87品种烟叶钾、氯含量平均值均最高；水稻—烤烟模式烟叶钾、氯含量及钾/氯均高于玉米—烤烟模式。

Study on Characteristics of Potassium and Chlorine Contents of Flue cured Tobacco in Baise Tobacco growing Areas of Guangxi Province

For deeply understanding the characteristics of potassium and chlorine contents of flue cured tobacco in Baise tobacco growing areas, basic statistical characteristics of potassium and chlorine contents of flue cured tobacco, difference of potassium and chlorine contents of flue cured tobacco between regions, stalk positions, varieties and tillage models were studied. The results showed that potassium content was higher, but chlorine was lower, the ratio of potassium to chlorine was medium in Baise tobacco growing areas, the content of potassium less than 2.0% accounted for 12.73 percent, the content of chlorine less than 0.3% accounted for 73.63 percent, and the ratio of potassium to chlorine more than 12 accounted for 30.91 percent. Potassium and chlorine contents of flue cured tobacco was of difference between regions, stalk positions, varieties and tillage models, the details was as follows: the potassium content in Longlin and Tianlin county was the lowest, but the chlorine content was low in each county; the potassium content of middle leaves was higher than top leaves, but chlorine content was lower than top leaves; the contents of potassium and chlorine of Yunyan 87 variety was higher than other varieties; the contents of potassium and chlorine and the ratio of potassium to chlorine in rotation of rice and tobacco was much higher than that in rotation of maize and tobacco.