Abstract:

To investigate the effects of different formulations of organic fertilizer on oil content，yield and quality of flue-cured tobacco leaves，a field experiment was conducted in the Xuchang tobacco-growing area. Four treatments were set up：local farmers' conventional fertilization as the control（CK），and three organic fertilizer treatments with different formulations，designated as Formula 1，Formula 2，and Formula 3. The yield and quality performance of flue-cured tobacco under each treatment were measured and analyzed. The results showed that the single-leaf weight of Formula 1，Formula 2，and Formula 3 was significantly （p<0.05） higher than that of the control，with increases of 22.32%，24.71%，and 16.83%，respectively. The oil content scores of appearance quality were improved compared with the control，and the yields of petroleum ether extract were significantly increased in all three formula treatments. The output values of Formula 1 and Formula 2 were significantly increased by 12.89% and 10.86%，respectively，compared with the control. Sensory quality analysis of flue-cured tobacco leaves indicated that Formula 1 performed the best among all treatments. In conclusion，Formula 1 significantly enhanced the oil content of flue-cured tobacco leaves and showed the best overall improvement in yield and quality，making it a promising formulation for enhancing oil content，chemical quality，and yield of flue-cured tobacco in the Xuchang tobacco-growing area in central Henan.

Key words: organic fertilizer, flue-cured tobacco, oil content, yield, quality