为筛选可以施于烟苗根区的生物有机肥,采用盆栽试验研究了不同生物有机肥施于根区对烤烟根系形态、根系生理特性及干物质的影响.结果表明,生物有机肥施于根区,可增加烤烟根系长度、体积、直径和分枝数,提高烤烟根系活力,增加烤烟干物质量,以三饼合一生物有机肥对烤烟的促生效果最好.三饼合一生物有机肥、烟秸生物有机肥、中烟多效生物有机肥可以做基肥施于根区.凹凸棒复合微生物有机肥不能做基肥施于根区.%In order to select bio-organic fertilizer applied to tobacco plant root-zone, a pot experiment was conducted to study the effect of different bio-organic fertilizers applied to flue-cured tobacco root-zone on root morphology, root physiological characteristics and dry biomass of roots. The results showed that bio-organic fertilizers applied to root-zone could promote root length, root volume, root diameter, root branching number, improve root activity, increase dry biomass of roots. The "bio-organic fertilizer combined with 3 oil cake" was found to have the best effects of accelerating tobacco root growth. "Bio-organic fertilizer combined with 3 oil cake", "bio-organic fertilizer by tobacco straw fermentation" and "zhong-yan multi-effect bio-organic fertilizer"could be applied to flue-cured tobacco root-zone, while "embossed cudgel ore bio-organic fertilizer" could not be used for flue-cured tobacco root-zone application.
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