广西百色烟区烟叶钾和氯含量特征研究

Study on Characteristics of Potassium and Chlorine Contents of Fluecured Tobacco in Baise Tobacco-growing Areas of Guangxi Province

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。

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.