打顶方式和栽培密度及施氮量对湘西烟叶可用性的影响

摘要

To increase production and industry usability of flue-cured tobacco in xiangxi as the main purpose, different topping, panting density and nitrogen fertilizer rate on tobacco agronomic, economic character and quality of tobacco are studied in order. The results show that tobacco production and of nitrogen application rate was significant, topping by way of chemical composition, plant density and their interaction effects reached a significant level, the use of squaring topping, planting density of 0.5 m×1.1m, Mushi nitrogen 97.5 kg or 112.5 kg of cultivation methods, can increase production and industrial usability.%以提高湘西烟叶产量和工业可用性为目的,研究打顶方式、栽培密度及施氮量对烟叶农艺性状、经济性状及烟叶品质的影响.结果表明,施氮量对烟叶产量的影响差异显著,打顶方式、栽培密度及二者的交互作用对烟叶化学成分的影响差异极显著.采用现蕾打顶、栽培密度为1.1m×0.5m、施氮量为97.5 kg/hm2或112.5 kg/hm2的栽培方式时,能提高烟叶产量和工业可用性.