为探讨"八福仙"有机无机复混肥在烤烟生产上的使用效果,在4个县市安排了大区对比试验。初步试验结果表明,该肥料具有增强烟株长势、改善烟叶质量、提高产值的作用,在烤烟生产上具有一定的推广价值。

Some experiments were carried out to probe into the differences of the appearance characters,internal quality,chemical components and physical traits among the flue-cured tobacco leaves at different stalk position.The results could help for tobacco leaf grading according to the leaf appearance characters.

Effects of different fore-rotating crops,corn and sweet potato,on tobacco growth and quality were studied through field and pot experiments.The results showed that maize absorbed more nitrogen and phosphorus and less chlorine than sweet potato did.Appling maize or sweet potato flour in pot soil could remarkably promote the growth and improve the quality of tobacco.The optimal dosage is 50g/pot.Generally,sweet potato as fore-rotating crop is better than maize.