| 摘要 |
PROBLEM TO BE SOLVED: To provide an alternative means for natural sand used for hydroponics.SOLUTION: A raised floor-type cultivation bed filled with a granular inorganic culture medium is prepared, and while a culture solution is supplied to the inorganic culture medium, in a nutrient liquid cultivation method for cultivating a plant so that the root system of the plant can be expanded, a cooled ground product of molten slag of refuse incineration ash is used as the granular inorganic culture medium. |
