【摘要】 通过对不同部位不同成熟度烟叶的外观特征进行观察,发现烟叶的成熟度随外观特征而明显变化,下部叶的成熟特征有所不同,中上部叶片表现基本一致。测定烘烤前后不同部位、不同成熟度叶片的主要化学成分含量,结果表明,总氮随成熟度发展而降低;总糖、还原糖含量都随成熟度提高而增加到最大值后降低。烟碱含量不随成熟度的提高而显著变化。更多还原

【Abstract】 The physical appearance of tobacco leaves in different maturity and different growth stage was studied.The result showed that the physical appearance was changing along with the maturity.The changing of middle and upper leaves represented consistent.At the same time,we measured the main chemical component in different maturity and growth stage before flue-curing and after flue-curing.The results indicated that total nitrogen and protein was descending along with the maturity.Total sugar and reduced sugar was increased along with maturity till the peak appeared and then began to reduce.Nicotine had no obvious changing.更多还原