为探索马里兰烟适宜的氮磷钾比例,在五峰县烟区进行试验,研究了氮磷钾比例对马里兰烟生长情况、产量和内在品质的影响。结果表明,当氮磷钾比例为1∶1∶3时,烟叶的经济性状最好,化学成分较适宜,烟叶评吸质量较好。在五峰烟区土壤中等肥力下,马里兰烟的氮、磷、钾最佳使用量分别为180、180、540 kg/hm2。 In order to explore the suitable ratio of NPK to Maryland tobacco, the experiment was conducted in the tobacco-growing area of ​​Wufeng county to study the effects of N, P and K ratios on the growth, yield and internal quality of Maryland tobacco. The results showed that when the proportion of N, P, K was 1: 1: 3, the economic characters of tobacco were the best, the chemical components were suitable, and the smoking quality of tobacco leaf was better. Under moderate soil fertility in Wufeng tobacco plant, the optimum nitrogen, phosphorus and potassium levels of Maryland tobacco were 180,180 and 540 kg / hm2, respectively.