为了探索豫西烟区云烟87最适宜的施氮量和留叶数水平,通过大田试验,研究了施氮量、留叶数2个因素互作对云烟87生长发育、产量和品质的影响。结果表明,施氮量为95.44～118.44kg/hm2、留叶数19～22片/株时,云烟87田间长势强、株形较理想,初烤烟叶外观物理特性较好,产、质量适中,矿质元素及常规化学成份较为协调。其中,施氮量为118.44kg/hm2的处理产量(2 461.94kg/hm2)分别显著高于中、低氮处理12.92%、10.93%,产值达到36 329.74元/hm2;施氮量为95.44kg/hm2的处理均价达15.94元/kg,分别比高、低氮处理提高了9.63%(P>0.05)、4.73%。留叶数19～22片/株的处理田间呈现腰鼓型,利于通风透光,产质量适宜。综合分析,在中、高施氮水平(95.44～118.44kg/hm2),留叶数19～22片/株,豫西地区云烟87产量和品质表现最佳。 In order to explore the most suitable nitrogen application rate and leaf number retention in Yunyan 87 in the west of Henan Province, field experiments were conducted to study the effects of nitrogen and leaf retention on the growth, yield and quality of Yunyan87. The results showed that when the rate of nitrogen application was 95.44-118.44kg / hm2 and leaves number was 19-22 / plant, the field of Yunyan 87 grew stronger and the plant shape was more ideal. The appearance of the first flue-cured tobacco leaves had better physical properties, moderate yield and quality, Mineral elements and conventional chemical composition is more coordinated. Among them, the treatment yield of 118.44kg / hm2 (2 461.94kg / hm2) was 12.92% and 10.93% higher than that of middle and low nitrogen treatments respectively, the output value reached 36 329.74 yuan / hm2; the nitrogen application rate was 95.44kg / The average price of hm2 reached 15.94 yuan / kg, increased by 9.63% (P> 0.05) and 4.73% higher than that of high and low nitrogen treatment, respectively. Leaf number 19 ~ 22 / plant treatment presented waist drum type, which is conducive to ventilation and light, yield quality appropriate. According to the comprehensive analysis, the yield and quality of Yunyan87 were the best in middle and high N application level (95.44-118.44kg / hm2) and 19-22 leaves / plant.