PROBLEM TO BE SOLVED: To provide an inorganic culture medium for horticulture, the medium capable of cultivating plants with a simple structure and process on the basis of foam glass powder.SOLUTION: An inorganic culture medium for horticulture is provided, the mediums all grain sizes of foam glass powder being 4 mm or less. The grain sizes are composed of three sections, more in particular 10 to 47 wt.% of grain size of 4 mm or less to 2 mm or more, 12 to 19 wt.% of grain size of less than 2 mm to 0.25 mm or more, and 41 to 70 wt.% of grain size of less than 0.25 mm. The problem can be solved with the inorganic culture medium for horticulture by arranging the wt.% selected in each section so that the total wt.% becomes 100 wt.% and by neutralizing the 100 wt.% of the foam glass powder groups with acid.COPYRIGHT: (C)2016,JPO&INPIT【課題】発泡ガラス粉体をもとにして、シンプルな構成や工程による、植物を成育できる園芸用培地を提供する。【解決手段】園芸用無機培地であって、発泡ガラス粉体のすべての粒径が4mm以下で構成され、かつ粒径4mm以下~2mm以上が10~47重量%、粒径2mm未満~0.25mm以上が12~19重量%、粒径0.25mm未満が41~70重量%の粒径の3つの区分で、それぞれの区分において選択された重量%の合計が100重量%になるようにし、前記100重量%の発泡ガラス粉体群を酸で中和した培地用資材からなる園芸用無機培地により課題解決できた。【選択図】 図2
