以矮牵牛为材料,研究蓝藻沼液肥在盆栽矮牵牛上的应用效果,结果表明:浇施5倍稀释蓝藻沼液水处理下矮牵牛叶片叶绿素SPAD值、累积开花数、花径等指标与施用化肥处理相比差异不显著;定植72 d浇施5倍稀释蓝藻沼液水处理下矮牵牛单株存花数极显著少于化肥处理。蓝藻沼液可以作为肥料替代或部分替代化肥应用于盆栽矮牵牛生产,直接施用蓝藻沼液肥或基质逢干浇施蓝藻沼液水方法都能够保证矮牵牛正常生长开花。 The petunia material was used to study the application effect of cyanobacterial biogas slurry on potted petunia. The results showed that the chlorophyll SPAD value of petunia leaves treated with 5 times dilution of cyanobacterial water and the cumulative flowering number, flower diameter, etc. There was no significant difference between the index and the application of chemical fertilizers. The number of flowers per plant in the petunia was significantly less than that of the chemical fertilizers under the water treatment of 5-fold dilution of cyanobacteria in 72 d. Cyanobacterial biogas can be used as fertilizers instead of fertilizers or potted petunias in part. Direct application of cyanobacteria biogas slurry or substrate to dry-mulch cyanobacteria biogas slurry can ensure the growth and flowering of petunia.