SAND PLANTING STRUCTURE CONTAINING COMPOUND-TYPE NUTRITIONAL PLANTING SANDS

摘要

Provided is a sand planting structure containing compound-type nutritional planting sands capable of being directly used for planting and able to retain water and fertilizer. The sand planting structure comprises a planting container and compound-type nutritional planting sands placed in the container; the planting sands comprise porous sand balls, and microbial membranes and nutrient film coating the surface of the porous sand balls successively from the inside to the outside; the porous sand balls are of porous structure and formed by bonding natural sand particles with binders containing at least hydrophilic binders, and there are pores suitable for adsorption between the adjacent natural sand particles. The sand planting structure helps to reduce the loss of fertilizer and is conducive to plant growth by means of the ability to retain water and fertilizer of the compound-type nutritional planting sands and the planting container with permeability to air.