湖南不同生态区烤烟主要化学成分比较

Comparison on Main Chemical Components of Flue-cured Tobacco Leaves Grown in Different Ecological Areas of Hunan Province

为更好地认识湖南省不同生态区烤烟化学成分的差异,采集了湖南省3个生态区宁乡县、宁远县、桑植县的B2F、C3F、X2F三个等级烤烟样本54个,测定了烟叶总糖、还原糖、烟碱、总氮、钾、氯含量,并进行了比较研究。结果表明:(1)总糖和还原糖含量表现为宁远县>宁乡县>桑植县,总植物碱含量表现为桑植县>宁乡县>宁远县,总氮含量表现为桑植县>宁远县>宁乡县,氯含量表现为宁远县>宁乡县>桑植县,钾含量表现为宁乡县>宁远县>桑植县;(2)总糖、还原糖、总植物碱、氯、钾含量生态区间差异显著,主要表现为湘南烟区与湘西北烟区差异大,湘中烟区与湘南烟区化学成分较接近。

In order to full understand the difference of chemical components of flue-tobacco leaf in different ecological areas of Hunan Province,the chemical components of flue-tobacco leaf were comparative studies by detecting total sugar,reducing sugar,nicotine,total nitrogen,potassium and chlorine of 54 samples with 3 grades (B2F,C3F,X2F) from the typical tobacco-growing counties (Ningxiang,Ningyuan,Sangzhi).The results showed that:(1)The average concentration of total sugar,reducing sugar and chlorine in different counties was as follows Ningyuan > Ningxiang > Sangzhi;the total nicotine was as follows Sangzhi > Ningxiang > Ningyuan;the total nitrogen was as follows Sangzhi > Ningyuan > Ningxiang;the potassium was as follows Ningxiang > Ningyuan > Sangzhi.(2) The concentration difference of total sugar,reducing sugar,total nicotine,chlorine and potassium in different ecological areas were significant;the difference of chemical components of flue-tobacco leaf of Xiangnan and Xiangxibei was bigger than the difference of Xiangnan and Xiangzhong.