施氮量、种植密度和留叶数对湘西烟区湘烟7号产量和质量的影响

朱子健, 陈娜娜, 吴月莹, 穰中文, 戴林建, 田明慧, 田峰, 易镇邪

Effects of Nitrogen Application Rate, Planting Density and Retained Leaf Number on Yield and Quality of Xiangyan 7 in Tobacco Region of Western Hunan

Zhu Zijian, Chen Nana, Wu Yueying, Rang Zhongwen, Dai Linjian, Tian Minghui, Tian Feng, Yi Zhenxie

表9 不同栽培措施对烤烟产量与产值的边际值

Table 9 Marginal values of different cultivation measures on the yield and output value of flue-cured tobacco

栽培因子 Cultivation factor 产量 Yield (kg/hm2) 产值（元/hm2） Output value (yuan/hm2) 均价（元/kg） Average price (yuan/kg) 上等烟比例 Proportion of superior tobacco (%) N1 2404.61b 61 796.72b 25.73a 41.55ab N2 2452.01b 61 832.39b 25.18a 37.43b N3 2760.80a 70 561.59a 25.56a 43.88a D1 2526.03ab 64 588.06ab 25.59a 41.65a D2 2456.55b 61 799.38b 25.13a 40.34a D3 2634.84a 67 803.26a 25.75a 40.88a L1 2506.63b 65 996.25a 26.34a 45.74a L2 2438.18b 61 344.61b 25.15b 39.85b L3 2672.60a 66 849.85a 24.97b 37.29b