云南省临沧烟区烤烟化学成分特征及空间分布

摘要

为了解云南省临沦市烤烟化学成分特征与空间分布,测定了临沧市7县1区的B2F,C3F,X2F 3个等级189个烤烟样品还原糖、总糖、烟碱、总氮、钾与氯含量,并应用模糊数学、多元统计分析与地统计学方法进行数据分析.结果表明:①临沧市烤烟总氮、烟碱、钾、氯含量以及钾氯比均在适宜范围内,总糖、还原糖含量和糖碱比稍高,氮碱比略低.②等级间除还原糖与氯外,其余指标差异显著；品种间仅总糖与氯差异显著；县(区)间除总氮外,其余指标差异显著.③临沧大部分烟区的烟样化学成分综合指数较高,其中,镇康县、沧源县与临翔区化学成分综合指数最高,凤庆县最低.%In order to investigate the characteristics and spatial distribution of chemical components in flue-cured tobacco leaves from Lincang City, Yunnan Province, the contents of reducing sugar, total sugar, nicotine, total nitrogen, potassium and chlorine in 189 samples of B2F, C3F and X2F leaves collected from 7 counties and 1 district in Lincang were determined, and the resultants were analyzed with fuzzy math, multivariate statistical analysis and geostatistics. The results showed that: 1) The contents of total nitrogen, nicotine, potassium and chlorine and potassium/chlorine ratio in Lincang leaves fell all within suitable ranges. However, the contents of total sugar and reducing sugar and sugar/nicotine ratio were slightly higher, while nitrogen/nicotine ratio was slightly lower. 2) The difference of chemical components (except for reducing sugar and chlorine) between grades and that (except for total nitrogen) between growing areas was significant. However, the difference between cultivars was statistically significant only for total sugar and chlorine. 3) Most leaf samples possessed higher comprehensive indexes of chemical components, samples from Zhenkang, Cangyuan and Linxiang the highest, while samples from Fengqing the lowest.