< Topic >Low at the same time cost with simple manipulation, the contaminated water which with the inorganic salt (for example, NaCl) which inhibits the growth of the plant was contaminated at the same time it is low at cost, purifying efficiently, it offers the plant cultivation system which makes that it supplies to the plant possible.SolutionsIt did not make the water transmit and it was laid out on the nutrient medium blend, and the said nutrient medium blend where vapor was laid out on the choice moisture permeability film and the said film which are made to transmit includes with the base material and water absortion power resin for plant cultivation, including the vapor impermeability mulching sheet, the plant cultivation system which becomes.< Choice figure > Drawing 3【課題】低コスト且つ簡単な操作で、植物の生育を阻害する無機塩(例えば、NaCl)で汚染された汚染水を低コストで且つ効率的に浄化して植物に供給することを可能にする植物栽培システムを提供する。【解決手段】水は透過させず水蒸気は透過させる選択的透湿性フィルム、該フィルム上に配置された、植物栽培用支持体と吸水性樹脂とを含む培地混合物、および該培地混合物上に配置された、水蒸気不透過性マルチングシートを含んでなる植物栽培システム。【選択図】 図3