Salt spray resistant planting structure suitable for vertical greening of bougainvillea speetabilis on coastal bridge

The utility model provides a salt-fog-resistant planting structure suitable for vertical greening of bougainvillea speetabilis on a coastal bridge. The salt-fog-resistant planting structure comprises a planting pot, a bottom salt discharging layer, a sunshade net, a plant solid waste fermentation crushed material layer, a cultivation soil layer, a root blocking plate and a side salt discharging layer. Drain holes are formed in the bottom of the planting pot, the bottom salt discharge layer, the sunshade net layer, the plant solid waste fermentation crushed material layer and the cultivation soil layer are laid layer by layer, the root blocking plate surrounds and covers the outer ring of the cultivation soil layer and the outer ring of the plant fermentation crushed material layer, and the side salt discharge layer is made of ceramsite and surrounds and covers the outer ring of the root blocking plate layer. According to the planting structure, after salt is flushed in a spraying irrigation mode, flushing wat