重庆市巫山烟叶化学成分及其协调性年份变异特征分析

摘要

The chemical composition indexes and their coordination of the upper leaves (B2F) , middle leaves (C3F) and lower leaves (X2F) of flue - cured tobacco samples in Wushan county of Chongqing city from 2008 to 2010 were analyzed. The results showed that the two sugar contents of the upper leaves ( B2F) , middle leaves ( C3F) and lower leaves (X2F) were higher, which were in the range of high -quality tobacco leaf; the total plant alkali content was moderate; the total nitrogen content was slightly low; the potassium content was below the standard of high -quality tobacco leaf; the chlorine content was less. The lower leaves (X2F) had a larger variation coefficient in potassium content, the chloride contents in three parts all had higher variation coefficient, but other chemical compositions in three parts had little change, and they were more stable.%分析了重庆市巫山县2008 ～2010年连续3年的烟叶样品上部叶(B2F)、中部叶(C3F)、下部叶(X2F)的化学成分指标和化学成分协调性,结果表明:上部叶(B2F)、中部叶(C3F)、下部叶(X2F)的两糖含量均较高,处于优质烟叶含量范围；总植物碱含量适中,总氮含量略低,钾含量低于优质烟叶的标准,氯含量偏低.下部叶(X2F)钾含量变化系数较大,3个部位的氯含量变异系数均较高,其他化学成分则变化不大,较为稳定.