以云烟85为材料,探讨了根区润湿灌溉条件下不同施肥量对烤烟生长的影响.结果表明,约低于当地现行烤烟生产施肥量(50kg/667 m2,常规处理CK)的润湿灌溉下施肥量处理Ⅱ(37.5 kg/667 m2),在试验过程中与施肥量较高的处理Ⅲ(50 kg/667m2)、处理Ⅳ(62.5 kg/667m2),对烤烟的产量并没有显著性的差异,与常规处理CK比较,每667m2可节省肥料施用量25%.试验表明使用润湿灌溉技术,在施肥量较少的处理Ⅱ水平上,获得了与施肥量较多的处理Ⅲ、Ⅳ基本相同的生产效果,这说明根区润湿灌溉新技术有助于提高烤烟高效利用水肥资源的能力.%Effects of different fertilizer application on the growth of flue-cured tobacco ( cv. Yunyan 85 ) under humid irrigation were studied in Changshun county, Guizhou Province. Four fertilizer application levels,i. e. , 25.0 kg (Ⅰ), 37.5 kg ( Ⅱ ), 50.0 kg ( Ⅲ ) and 62.5 kg ( Ⅳ ) per 667 m2 were used in the present test. The result showed that the treatment Ⅱ with humid irrigation, a little bit lower to the amount for local production in large-scale application gave no significant differences on the yield of flue-cured tobacco compared with treatments, Ⅲ and Ⅳ. Treatment Ⅱ in humid irrigation technique almost got the same yield with that applied more fertilizer of 50 kg/667 m2 without humid irrigation. It indicated that the humid irrigation technique might increase the utilization efficiency of water and fertilizers for improving the yield and quality of tobacco.
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