关键词: 烤烟, 散叶烘烤, 气流下降式烤房, 云烟87, 多雨烟区

Abstract: In order to explore loose-leaf baking technology suitable for the rainy ecological conditions in Jiangxi Province, the airflow descent bulk curing barns was transformed. On the basis of the original bamboo air distribution plate and single bar, metal mesh wind deflector and H-shaped bar were optimized and improved, and different leaning loose-leaf baking flue-curing treatments were carried out and compared. The results showed that when tobacco leaves were stacked and loaded inclining to the direction of partition wall of tobacco curing barn by about 15°, and the loading density was reasonably controlled, the baked dry tobacco weight could be increased by 50.99%～62.88%, and the labor cost of loading, unloading tobacco could be reduced by 43.15%～46.84%. Compared with hang pole bulk curing, the average price of the middle and upper leaves of loose-leaf loading treatments was increased by 0.18～4.92 yuan·kg-1, and the sensory quality was improved by 0.2～3.9 points. Reducing the yellowing degree of middle warm layer tobacco leaves during yellowing period by 10%～20%, and decreasing the maximum temperature of stem-drying period by 2～3 ℃, tobacco leaves could be laid down in an orderly direction to the partition wall of tobacco curing barn, and it was successfully baked; the cured tobacco leaves shrunk obviously, the appearance quality such as structure, oil content and color of tobacco leaves were obviously improved, the phenomenon of thinning of tobacco leaves in low temperature area and scorched gas of tobacco leaves in upper layer tobacco leaves were alleviated; and the malpractice of leaves color in main vein and both sides in loose-leaf baking treatments was effectively improved.

Key words: flue-cured tobacco, loose-leaf tobacco loading, airflow descent bulk curing barns, Yunyan 87, rainy areas