Abstract: Basic conditions for tobacco-growing areas, main climatic factors and quality of tobacco leaves were analyzed in Liangshan of Sichuan Province. The results indicated that Liangshan tobacco-growing areas had a long frost-free period, high accumulated temperature of ≥10℃, a long period of time with daily average temperature of ≥20℃ and low content of Cl-1 in the 0-60cm soil layer. The daily average temperature was about 20℃ and the hours of sunshine were more than 800h during tobacco growing periods. The high sunshine percentage and the abundant rainfall with reasonable distribution in the middle and south areas were quite propitious to the growth and development of the flue-cured tobacco. Liangshan tobacco leaves had distinguishing features of high appearance quality,suitable contents of nicotine and total nitrogen, and higher content of reducing sugar in the upper leaves and cutters. The N/Nic and RS/Nic of cutter leaves were harmonious,and the tobacco leaves also had the features of clear flavor with high quality and good sensory evaluation.

Key words: Liangshan tobacco-growing areas, Liangshan tobacco-growing areas, Climatic factors, Tobacco leaf quality