nicotine content

Effect of Girdling on nicotine content and quality of upper leaves of flue-cured tabacco plants

环切对烤烟上部叶烟碱含量及品质的影响

After that, the nicotine content decreased with leaf age.

中 、 下三个部位的烟碱与烟叶钾含量均呈负相关关系.

The smoking quality of cigarettes made of the microwave dried cut tobacco was improved obviously, while the weight of cigarette, nicotine content in smoke, and tar yield were decreased by 13.4%, 21.2%, and 4%, respectively.

卷烟质量得到明显提高，单支重量、烟气烟碱量和焦油量各下降134%、212%和4%。

Investigation of nicotine content among the tabacco leaf in the different areas

不同地区烟叶中烟碱含量调查

The nicotine content of the upper leaves of remained 22,24 and 26 leaf treatments treated by the nicotine-reducing stick is 0.75%, 0.42% and 0.66% lower than CK respectively.

上部烟碱含量留叶数22片、24片和26片插签处理分别比对照下降0.75、0.42和0.66个百分点；

At growing age, spraying boric fertilizer with proper amount can reduce nicotine content evidently and improve aroma quality, which giving rise to harmony of chemical composition of tobacco shred and better quality in the round.

在团棵期和旺长期喷施硼肥，掌握在适宜用量的范围不仅可有效降低红土晒烟的烟碱含量，使烟丝化学成分更趋协调，而且改善了红土晒烟的香气品质，使整体内在质量获得提高。

After 75 days , the nicotine content decreased with leaf age.

而烟叶钾含量随着叶龄的增大在不断降低.

At present, some main problems on tobacco quality are unconspicuous fragrance style, impure fragrance, insufficiency of fragrance amount, interior absonant chemistry component, higher nicotine content and poor usability of upper leaves.

目前我省烟叶质量存在的主要问题是：香气风味不够突出，香气质不纯，香气量不足，内部化学成份不协调，烟碱含量偏高，上部烟叶可用性差。

Effects of Binding the Stem Tops after Topping with Tampons Soaked with α-NAA Solution on Nicotine Content and Sugar-nicotine Ratio in the upper Leaf of Fluecured Tobacco

α-萘乙酸棉球扎顶对烤烟上部烟叶烟碱含量及糖碱比值的影响

It was suggested that the usability of some Chinese tobacco leaves with high nicotine content, especially the upper leaves, would probably be improved by adequately treated with these microbes.

目前国产烟叶普遍存在烟碱含量偏高的问题，尤其是上部烟叶烟碱含量过高而难以较多用于叶组配方中，因此在工业上研究利用微生物对烟草进行降解烟碱处理具有实际应用价值。

Nicotine content in the upper leaves of the plants increased with the postponing of harvest, but it decreased from 5.07% in the non-girdled control to 4.23%, 4.33% and 4.69%, respectively, in the three girdling treatments.

结果表明：随着采收期推迟，上部烟叶烟碱含量逐渐增加，未环切处理上部烟叶烟碱含量为5.07%，环切后各处理烟碱含量分别降至4.23%，4.33%，4.69%；

The correlation between potassium and nicotine content of leaves were negative.

这说明在烟叶的全生育期内,烟叶钾含量增加时,烟碱含量是减少的.

By measuring the nicotine content among the tabacco leaf in the different areas.

通过对不同地区烟叶中烟碱含量测定发现,烟碱含量相差甚远.