Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2021, Vol. 11 ›› Issue (11): 54-60.doi: 10.11923/j.issn.2095-4050.cjas2020-0015

Special Issue: 烟草种植与生产

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Correlation Between Soil Nutrients and the Chemical Quality of Tobacco Leaves in Liangshan Yi Autonomous Prefecture

Du Qian1(), Wang Bing2, Li Bing2(), Wang Changquan2, Xie Yunbo3, Chen Yulan4   

  1. 1China Tobacco Sichuan Industrial Co., Ltd., Chengdu 610066, Sichuan, China
    2College of Resources, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
    3Sichuan Province Corporation of China Tobacco, Chengdu 610041, Sichuan, China
    4Xichang Tobacco Corporation of Sichuan Province, Xichang 615000, Sichuan, China
  • Received:2020-04-22 Revised:2020-10-13 Online:2021-11-20 Published:2021-12-09
  • Contact: Li Bing E-mail:154204359@qq.com;benglee@163.com

Abstract:

The paper aims to improve the reasonable fertilization in Liangshan tobacco area and improve the chemical quality of tobacco leaves. Status of soil nutrients and the chemical quality of tobacco leaves were analyzed by descriptive statistics and correlation analysis. The results show that the soil nutrient contents of Liangshan Yi Autonomous Prefecture have different status and the distribution is not balanced. Tobacco-growing soil pH is generally suitable and stable. The soil has moderately low soil organic matter and large range of available phosphorus variation. The content of alkali-hydrolyzale nitrogen is abundant, but the content of available potassium is insufficient. The contents of total sugar and reducing sugar are relatively high, but the contents of potassium and chlorine in tobacco leaves are relatively low. Within a certain range, there is a significant negative correlation between the contents of soil alkali-hydrolysable nitrogen and reducing sugar in tobacco leaves, meanwhile, the contents of available phosphorus content is significantly and negatively correlated with tobacco leaf total sugar and chlorine content, and significantly and positively correlated with tobacco leaf potassium content and potassium-chloride ratio. The potassium content of tobacco leaves is significantly and negatively correlated with soil pH, and significantly and positively correlated with soil organic matter. In the proper range of soil pH, pH and organic matter and soil nutrient have a greater impact on the chemical quality of tobacco leaves. In the proper range of organic matter, the correlation between soil nutrients and chemical components of tobacco leaves is not obvious. To improve the chemical quality of tobacco leaves in Liangshan Yi Autonomous Prefecture, it is necessary to control nitrogenous fertilizer, balance phosphatic fertilizer and apply more potash fertilizer to reduce the contents of sugar in tobacco leaves.

Key words: Soil Nutrient, Tobacco Leaves, Chemical Composition, Correlation Analysis, Liangshan Yi Autonomous Prefecture

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