Abstract:

Field experiments，chemical analysis and sensory test were carried out to study the effects of different nitrogen fertilizers on the aroma substances of flue-cured tobacco leaves. The results showed that，yield，chemical composition and sensory test results of flue—cured tobacco were influenced remarkably by different amount of nitrogen applied．Value of product，average price，rate of top quality leaves were higher under preferential amount of applied nitrogen．Nicotine content, total nitrogen and petroleum ether extracts content was increased，but total sugar content, reducing sugar content, the ratio of reducing sugar to nicotine and total nitrogen to nicotine were reduced，as the increasing of the amount of applied nitrogen．Chemical composition and sensory test results were better with 58.5 kg/hm2 and 78 kg/hm2 of nitrogen applied．