In an artificial soil medium composed of artificial soil particles, it is possible to supply moisture continuously to a plant to be cultivated over a long period of time, or to highly control the amount of water supply according to the plant to be cultivated Provide technology to become. An artificial soil medium 100 including a plurality of artificial soil particles 50 having a base 10 capable of absorbing / releasing moisture, wherein the plurality of artificial soil particles 50 absorb moisture from the base 10 in a state where the base 10 absorbs moisture. It is composed of a plurality of types of artificial soil particles 50 set to have different moisture absorption / release characteristics indicating the state of release, and the plurality of types of artificial soil particles 50 transfer moisture between different types of artificial soil particles 50. Is configured to be possible.人工土壌粒子を集合してなる人工土壌培地において、栽培対象の植物に長期に亘って持続的に水分を供給したり、栽培対象の植物に応じて水分供給量を高度にコントロールすることが可能となる技術を提供する。 水分を吸収／放出可能な基部１０を備えた複数の人工土壌粒子５０を含む人工土壌培地１００であって、複数の人工土壌粒子５０は、基部１０が水分を吸収する状態又は基部１０から水分を放出する状態を示す水分吸放出特性が夫々異なるように設定された複数種の人工土壌粒子５０で構成され、複数種の人工土壌粒子５０は、異なる種類の人工土壌粒子５０の間で水分の移動が可能となるように構成されている。
