Vermiculite, which is mainly composed of mica, is baked at high temperatures of over 700 degrees Celsius. The product is porous and has the ability to absorb about six times its weight in water, so it is used as a horticultural material for soil improvement, seedling soil, cultivation soil mix, and soil for cuttings. [Yasuo Hori] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
雲母(うんも)を主成分とする蛭石(ひるいし)を700℃以上の高温で焼いたもの。製品は多孔質でしかも重量の約6倍もの吸水能力をもつことから、園芸材料として土壌改良や育苗用土、栽培用土の配合資材、挿木用土などに用いられる。 [堀 保男] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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