GRAVEL CULTURE METHOD, AND METHOD FOR PRODUCING CONTAINER MADE OF TUFFACEOUS SANDSTONE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a gravel culture method solving the problem that conventional gravel culture employs ordinary gravel such as andesite and/or granite, the gravel itself only supports the roots of a grown plant and has little water absorption or root-adherent property, and that water is intermittently given, and therefore the plant runs dry when water supply gets scarce.SOLUTION: The gravel culture method comprises: planting a plant to be cultivated or sowing seeds of the plant in something charged with a porous granulated burnt product produced by granulating tuffaceous sandstone powder and burning the granulated one, into an unglazed flower pot or a container burnt using the tuffaceous sandstone powder; soaking the plant together with the flower pot or the container in a water tank in which water is shallowly filled; and cultivating the plant by mixing solid fertilizer with the porous granulated burnt product or adding liquid fertilizer to water for fertilizer application. The porous granulated burnt product made of tuffaceous sandstone powder has good absorption to naturally absorb water, so that the water is gradually supplied to the plant.