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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(50 kg/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/667 m2)、处理Ⅳ(62.5 kg/667 m2),对烤烟的产量并没有显著性的差异,与常规处理CK比较,每667 m2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。
Taking Yunyan85 as material, the effects of different fertilizers on the growth of flue-cured tobacco under root irrigation with wetting irrigation were discussed. The results showed that fertilizer treatment Ⅱ (37.5 kg / 667 m2) under wetting irrigation was lower than that of the current flue-cured tobacco production (50 kg / 667 m2, conventional treatment CK) Treatment Ⅲ (50 kg / 667 m2) and treatment Ⅳ (62.5 kg / 667 m2) had no significant difference on the yield of flue-cured tobacco, which could save 25% fertilizer application per 667 m2 compared with CK. The results showed that using wetting irrigation technology, the same production effect as that of treatment Ⅲ and Ⅳ with more fertilizer application was obtained at treatment Ⅱ level with less fertilizer, which shows that new technology of root zone irrigation and irrigation can help to improve Flue-cured tobacco efficient use of water and fertilizer resources.