不同生态区烤烟烟碱含量的变异分析

Variation analysis of nicotine content in flue-cured tobacco in different ecotopes

  • 摘要: 根据纬度差异和地理方位, 将我国主产烟区的7省12县分为7个生态区, 采用统一栽培模式, 分析了不同区域烤烟烟碱含量的变异。结果显示: 不同生态区的烤烟烟碱含量存在着广泛变异, 变异特征各不相同。辽宁烟区的烟碱含量年际间变异最大, 河南和福建烟区年际间变异最小; 包括贵州、四川、福建、云南烟区的南方烟区烟叶烟碱含量年际间稳定性优于包括辽宁、山东、河南烟区的北方烟区。贵州和四川烟区的烟碱含量部位间变异程度最大, 辽宁烟区部位间变异最小; 南方烟区烟碱含量的部位特征较明显, 北方烟区烟碱含量的部位特征相对不显著。河南烟叶烟碱含量部位内变异较小, 福建烟区变异较大。中部叶烟碱含量变异较大, 下部烟叶变异较小, 上部叶较稳定。北方烟区烟叶烟碱含量在部位内和等级内的稳定性均好于南方烟区。各烟区橘黄烟叶烟碱含量均高于柠檬黄烟叶, 不同生态区烤烟烟碱含量的变异主要来源于橘黄烟叶烟碱含量的变异。烟碱含量在不同生态区域间差异极显著, 河南烟区的烟碱含量最高, 辽宁烟区最低。北方烟区烟碱含量高于南方烟区, 但辽宁烟区的烟碱含量倾向南方, 云南烟区的烟碱含量靠近北方。

     

    Abstract: In this study, 12 counties in 7 provinces of China’s main tobacco cultivation areas were divided into 7 ecotopes based on geographic orientation and latitudinal difference. Then nicotine content variation in flue-cured tobacco under the same cultivation conditions in different ecotopes was analyzed. The results show extensive flue-cured tobacco nicotine content variation for different ecotopes. The degree of inter-annual nicotine content variation is highest for Liaoning and lowest for Henan and Fujian regions. Inter-annual nicotine content stability in the southern regions (Guizhou, Sichuan, Yunnan and Fujian) is higher than in the northern regions (Liaoning, Shandong and Henan). Nicotine content variation in flue-cured tobacco among different stalk parts is highest for Guizhou and Sichuan, but lowest for Liaoning. The characteristics of nicotine content in the stalk parts are more obvious for the southern than the northern regions. Nicotine content variation in the stalk parts is low for Henan region but high for Fujian region. Nicotine content variation is high in middle leaves, low in lower leaves and relatively stable in upper leaves. Nicotine content stabi- lity in the different stalk parts and grades in north are higher than in the south. Nicotine content of orange leaves is higher than lemon-yellow leaves in all the ecotopes. Nicotine content variation among the different regions is mainly driven by variation of nicotine in orange leaves of flue-cured tobacco. Difference in nicotine content from one ecotope to another is significant. Nicotine content of flue-cured tobacco is highest for Henan region and lowest for Liaoning, and is higher for the north than for the south; that in Liaoning region is approaching that in the south, while that in Yunnan region approaching the north.

     

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