摘要:
摘 要：研究了罗平县不同海拔高度和土壤类型与中部烟叶化学成分的关系。结果表明，烟叶总糖、还原糖、糖碱比、氮碱比和硫的含量随着海拔高度的增加而增加，烟叶烟碱和总挥发性碱的含量随着海拔高度的增加而减少。红壤条件下，烟叶总糖和还原糖含量与土壤有效镁含量分别呈极显著和显著负相关；黄壤条件下，烟叶总糖、还原糖含量与土壤有效硼含量分别呈极显著和显著正相关；新积土条件下，土壤有效硼含量与烟叶还原糖、糖碱比呈显著和极显著正相关，与烟叶烟碱、总挥发性碱含量呈显著和极显著负相关，与烟叶两糖差呈显著负相关。罗平烟叶在1 600～1 800 m的海拔高度范围以及黄壤条件下的烟叶化学成分较为适宜。
关键词:
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烤烟
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海拔高度
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土壤类型
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化学成分
Abstract:
Abstract: The relationships of chemical composition in tobacco leaf at the different altitudes and soil types of Luoping were studied in this paper. The results showed that, with the increase of altitudes, total sugar, reducing sugar, sugar-nicotine ratio, nitrogen-nicotine ratio and sulfur of tobacco leaf increased, and nicotine and total volatile alkali of tobacco leaf decreased. For red soil, there were significantly negative correlations between total sugar of tobacco leaf and available magnesium of soils, reducing sugar of tobacco leaf and available magnesium of soils. For yellow soil, there were significantly positive correlations between total sugar of tobacco leaf and available boron of soils, reducing sugar of tobacco leaf and available boron of soils. For alluvial soil, there were significantly positive correlations between reducing sugar of tobacco leaf and available boron of soils, sugar-nicotine ratio of tobacco leaf and available boron of soils, there were significantly negative correlation between nicotine of tobacco leaf and available boron of soils, total volatile alkali of tobacco leaf and available boron of soils, difference between total sugar and reducing sugar of tobacco leaf and effective boron of soils. In conclusion, chemical composition of tobacco leaf is the best from 1 600 to1 800 m altitudes and the condition of yellow soils.
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