Abstract: 【Objective】 The purpose of the experiment is to study the effects of applying different sesame organic materials as nest-fertilizers on chemical components and aroma quality of flue-cured tobacco. 【Method】 Different from the traditional cake fertilizer applied as base fertilizer in row replacement, nest-fertilizers of different sesame organic materials were applied at transplanting period in the field experiment. 【Result】 The quality of three parts of tobacco leaf could be improved when sesame cake fertilize was used as the nest-fertilizer. The quality of middle and lower leaves could be improved when fried sesame was used as the nest-fertilize. The quality of upper leaves could only be improved when the sesame oil was used nest-fertilizer. The ratio of sugar/ nicotine and total N/nicotine were appropriate in three parts of tobacco leaves (with the treatment of cake fertilizer ) and upper & middle leaves (with the treatment of fried sesame), but the quality of three parts leaves with the treatment of sesame oil were no good, and the chemical components contents were less harmonious. The increase of total aroma components contents of lower and middle leaves was from neophytadiene, cembranoids and carotenoids, the increase of total aroma component contents of upper leaf was from phenylalanine products, brown chemical products and cembranoids (with the treatment of sesame cake fertilizer). The increase of total aroma component contents of middle and upper leaves was from neophytadiene, phenylalanine products and cembranoids (with the treatment of fried sesame). The increase of total aroma component contents of upper leaves was from neophytadiene and cembranoids (with the treatment of sesame oil). Sensory smoking results showed that three parts of tobacco leaf (with the treatment of sesame cake fertilizer) were the best in all of the treatments. The characteristics of them were pure aroma, adequate aroma and comfortable aftertaste. 【Conclusion】 The results showed that, when the same amount of sesame cake fertilizer was applied, a part of them applied as base fertilizer and nest-fertilizer was better than as base fertilizer, especially, the contents of neophytadiene (except that in upper leaves compared with CK) and the other aroma components. The other features of this treatment were comfortable sugar/ nicotine and total N/ nicotine ratios, lower contents of protein and Cl, higher K, more harmonious chemical and aroma components. It is better to improve aroma quality of tobacco leaves by combining sesame organic materials applied as basal fertilizer and nest-fertilizer.

Key words: Flue-cured tobacco, Nest-fertilizer, Sesame organic fertilizer, Chemical component, Aroma quality