探讨了烟草团棵期施用0.05%、0.10%、0.15%的浓度钼素对烟叶化学成分的影响，结果表明，在团棵期喷施钼肥可以提高还原糖和总糖含量，降低总氮和烟碱含量，而且可以使烟叶中氮碱比、糖碱比都有所提高。同时施钼能提高烟叶中性致香物质和降低苯并[α]芘含量。

In order to study the effects of concentration gradient nutrient of 0.05%， 0.10%， 0.15% in rosette stage on tobacco leaf chemical components， using field experiment， the effects of spraying different concentrations of molybdenum in rosette stage on tobacco routine chemical components， neutral aroma substances and flue gas main harmful components was researched in experimental field of Yancheng District， Luohe City， Henan Province. The results showed that the spraying molybdenum fertilizer in rosette could improve the reducing sugar， total sugar content， the nitrogen alkali ratio，sugar alkali ratio and reduce the total nitrogen and nicotine content. Spraying molybdenum could increase the content of neutral aroma substances and reduce benzo [α] pyrene of tobacco leaf.

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