摘要
[目的]分析评价湘西主产烟区烟叶化学成分，为烟区合理施肥提供依据。[方法]对湘西主产烟区共计140个烤烟样本的主要化学成分进行了统计分析和评价。[结果]湘西烟区烟叶总糖、还原糖含量较高，烟碱含量最大值较大，烟叶糖碱比较大，总氮含量较为适宜；龙山、永顺、保靖烟区烟叶总糖、还原糖、氯含量较高，总烟碱、总氮含量较低，钾含量稍低；而凤凰、花垣、古丈、泸溪烟区烟叶总糖、还原糖、氯含量较低，总烟碱、总氮含量较高，钾含量稍高。2014年，各烟区烟叶总糖、还原糖含量较大，总烟碱、总氮含量居中，烟叶化学成分含量较适宜。[结论]针对湘西烟区情况，通过合理施肥，达到营养平衡，协调各产区烟叶的化学成分。
Abstract
Objective] The aim was to study and analyze the chemical components of tobacco leaves in Xiangxi tobacco growing areas, and to provide basis for rational fertilization.[ Method] A comparative and evaluated study was conducted for chemical components of 140 flue-cured tobacco samples from the main tobacco growing areas of Xiangxi.[ Result] Total sugar and reducing sugar content in Xiangxi tobacco were higher, nicotine content maximum value was bigger, chlorine minimum value was smaller, the sugar alkali was bigger, total nitrogen content was relatively appropriate; total sugar, reducing sugar and chlorine in Longshan, Yongshun, Baojing were higher; total nicotine and total ni-trogen content were lower, potassium content was slightly lower; total sugar, reducing sugar, chloride content in Fenghuang, Huayuan Guzhang, Luxi were lower; total nicotine, total nitrogen content were higher; the potassium content was slightly higher.In 2014, total sugar and reducing sugar content was higher; total nicotine and total nitrogen was in the middle;chemical composition content was suitable.[Con-clusion] According to the situation of Xiangxi tobacco area, the chemical composition of tobacco leaves in different tobacco growing areas were coordinated by rational fertilization and nutrient balance.
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