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采用田间试验研究了白肋烟品种达白1号采收方式和砍收时期对不同部位间烟叶生物碱含量及氮碱比差异的影响。结果表明,全整株砍收烟叶生物碱、总氮含量的部位间差异最小,其次为大半整株采收,摘叶采收的烟叶生物碱、总氮含量和氮碱比的部位间差异较大。砍收较早时,部位间生物碱含量差异小,随着砍收期的推迟,上部叶生物碱积累量的增加幅度大于下部叶,生物碱含量的部位间差异增大。
Field trials were conducted to study the effects of harvesting and harvesting date on the alkaloid content and the ratio of nicotine to nicotine in different parts of Burley tobacco Variety Dabai 1. The results showed that there were the least differences among the parts of total alkaloids extracted from the whole plant and the total nitrogen content, followed by the harvest of more than half of the whole plant. The differences of alkaloids, Big. When harvesting was earlier, the difference in alkaloid content was small. With the postponement of harvesting, the accumulation of alkaloids in the upper leaves increased more than that in the lower leaves, and the differences in alkaloid content increased.