摘要:
研究了生态因子（海拔、气象和土壤养分等）与烟叶化学成分的相关关系。结果表明，海拔增加，中、上部烟叶的总糖和氯含量增加，而烟碱含量降低。气象因子中，对烟叶化学成分影响最大的因素是6月份的日照时数、7月份的降水量和气温。土壤养分中，硝态氮含量与上部烟叶的烟碱、总氮、蛋白质含量呈正相关；速效钾含量与中、上部烟叶钾含量呈正相关。
Abstract:
There existed obvious correlations among chemical compositions of tobacco leaf and altitude, weather factors and soil nutrients. The results in Guizhou province showed that the significant positive correlation of the altitude with the content of total sugar of middle and upper leaves, and also the significant negative correlation with the content of nicotine were found. Among weather factors in June, there existed significant positive correlation of sunlight hours with the contents of total sugar, reductive sugar, starch and potassium, whereas significant negative correlation with the content of nicotine and total nitrogen. Among weather factors in July, the significant negative correlation of precipitation with the content of total sugar, reductive sugar, nicotine and chloride, the significant positive correlation with potassium were found; meanwhile, the significant positive correlation of temperature with the content of total nitrogen of middle and upper leaves, and the significant negative correlation with the content of total sugar and reductive sugar of bottom leaves as well as protein of upper and bottom leaves were obtained. At the same time, the significant positive correlation of soil nitrate nitrogen with the content of nicotine, total nitrogen, protein of upper leaves, and the same correlation between soil available potassium and the potassium content of middle and upper leaves were found among soil nutrients.
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