PROBLEM TO BE SOLVED: To provide plant growth culture medium in which plants (for example, fruit vegetables, root vegetables and the like) can be grown efficiently in a limited space.SOLUTION: Plant growth culture medium 100 including plural kinds of artificial soil particles 50 includes: guide floors 2 which include first artificial soil particles 50a having water retention capability of more than a predetermined value and electric conductivity of less than a predetermined value, and which guide the extension direction of roots 21 of a plant 20 and a growth floor 3 which includes second artificial soil particles 50b having less water retention capability and higher electric conductivity than the first artificial soil particles 50a, and which promotes the growth of the roots 21 of the plant 20. The guide floors 2 are arranged locally on the surface side of the growth floor 3 in the state of being exposed.COPYRIGHT: (C)2015,JPO&INPIT【課題】限られた空間において、植物(例えば、果菜類や根菜類等)を効率よく栽培することを可能にする植物育成培地を提供する。【解決手段】複数種の人工土壌粒子50を含む植物育成培地100であって、所定値以上の保水性、及び所定値以下の電気伝導度を有する第一人工土壌粒子50aを含み、植物20の根21の伸長方向を誘導する誘導床2と、第一人工土壌粒子50aより保水性が小さく、且つ電気伝導度が大きい第二人工土壌粒子50bを含み、植物20の根21の成長を促す成長床3と、を備え、誘導床2は、成長床3の表面側に露出した状態で局所的に配置されることにある。【選択図】図1
