以红花大金元为试验对象，在盆栽条件下，研究5种水分处理对烤烟的生长及产量的影响。试验表明：烤烟全生育期的耗水呈现前期少、中期多、后期又少的规律，伸根期耗水量约占全生育期总耗水量的22%~25%，旺长期约为40%~42%，成熟期约占34%~35%。灌水量的增加对烤烟株高、叶片尺寸等生理指标存在显著影响，盆栽烤烟的适宜灌水量约为每株40.36kg，且灌水量的减少会使叶比重逐渐减少，而茎比重逐渐增加。

Taking Honghuadajinyuan as the test object，the effects of 5 irrigation treatments on the growth and yield of flue-cured tobacco were studied through a pot experiment． The results show that the amount of water consumption of tobacco is less at the early stage，more at the middle stage and declines again at the later stage in pot experiment without rainwater． about 22% to 25% of total water consumption in the whole growing period of tobacco plants is at the root extending stage，40% to 42% at the vigorous growing stage and 34% to 35% at the maturing stage，respectively; the increase of irrigation amount has significant effects on the physiological indexes such as plant height，leaf size and so on; the suitable irrigation amount is about 40． 36 kg per plant; the reduction of irrigation will cause the leaf specific weight decreasing gradually，while the stem specific weight increasing gradually．