湖北省烤烟氯含量的时空分布及适宜性分析

Spatial Temporal Distribution and Suitability Evaluation of Chlorine Content in Flue-cured Tobacco in Hubei Province

【目的】了解湖北省烤烟氯含量的分布特征和指导烟叶生产的平衡施肥工作。【方法】采用常规化学分析的方法检测了2005—2015年湖北省4个烤烟种植区不同部位677个烤烟烟叶样品的氯含量,并进行了统计分析和适宜性评价。【结果】湖北省烤烟氯含量范围在0.03%~1.65%之间,80.1%的样品分布在低氯区间(<0.3%),17.7%的样品分布在适宜区间(0.3%~0.8%),2.2%的样品分布在高氯区间(≥0.8%);氯含量部位间表现为上部叶>下部叶>中部叶,产区间表现为襄阳、恩施烟叶氯含量极显著高于十堰、宜昌,年份间襄阳和恩施氯含量波动最大,十堰和宜昌波动平稳。【结论】湖北烤烟烟叶氯元素较为缺乏,应结合平衡施肥工作逐步缓解烟叶缺氯现状,提升烟叶品质。

[Purpose]Our aim was to understand the characteristics of chloride content of tobacco in Hubei and guide the work of leaf tobacco production of balanced fertilization. [Method]The statistical analysis and suitability evaluation of chloride content in three parts of flue-cured tobacco from 4 locations were used in this study with 677 samples from 2005 to 2015 by conventional chemical analysis method. [Results]The chloride contents in tobacco leaf ranged from 0. 03%-1. 65% of its dry matter,about 80. 1% of which distributed in the low level（ 0. 3%）,17. 7% in the suitable interval level（ 0. 3%-0. 8%） and 2. 2% in the high level（ ≥0. 8%）. Distribution of chlorine content was upper leaves lower leaves middle leaves among the three parts and the chlorine contents of Xiangyang and Enshi were significantly higher than those of Shiyan and Yichang. The fluctuation of chlorine content in Xiangyang and Enshi were strong and those in Yichang and Shiyan were smooth among years. [Conclusion] Hubei flue-cured tobacco leaves chlorine was relatively lack and should be combined with balanced fertilization work gradually ease the tobacco leaf chlorine lack the status quo,to improve the quality of tobacco leaves.