| 摘要 |
PROBLEM TO BE SOLVED: To provide pot bottom stones capable of decreasing chemical spray and preventing disease and insect damage, easy to recycle, facilitating water supply to a bottom, making plant roots hardly grow, preventing soil from flowing out, free from hindering plant growth, and giving no adverse effect on the environment even breaking off. SOLUTION: The pot bottom stones can prevent harmful insects from coming in and out by blocking a drain hole of a flowerpot, prevent roots from projecting, and prevent soil from flowing out, and are easy to recycle by bringing into one solid, and facilitate water supply to a bottom because of having less cavity. Furthermore, the pot bottom stones which have as the main ingredient, magnesium and sand can solve such problems of hindrance to plant growth and difficulty of breaking off, and decrease chemical spray frequency. The pot bottom stones are not fired even in a production process, so it is possible to suppress discharge of carbon dioxide. COPYRIGHT: (C)2008,JPO&INPIT
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