PROBLEM TO BE SOLVED: To provide an elevated cultivation device changing and automatically controlling the level of water stored in a water storage sheet, and stabilizing maintenance of the level of water stored in the water storage sheet so as to improve the yield of products to be cultivated.SOLUTION: This elevated cultivation device includes a permeable culture medium holding sheet 10 which has a cross section formed in a U shape, and holds a culture medium M where a product 1 to be cultivated is planted, a nonpermeable water storage sheet 20 which has a cross section formed in a U shape, and holds the lower side of the culture medium holding sheet 10 to store water W, a support body 40 which supports the culture medium holding sheet 10 and the water storage sheet 20 on a place the ground, and a water supplying means 50 which automatically supplies water W to the water storage sheet 20 when the level of water W stored in the water storage sheet 20 becomes a minimum level L, and automatically stops supplying water W to the water storage sheet 20 when the level of water W stored in the water storage sheet 20 becomes a maximum level H. The water W stored in the water storage sheet 20 is infiltrated into the culture medium M through the culture medium holding sheet 10 so as to let a root part 1a of the product 1 to be cultivated absorb.COPYRIGHT: (C)2011,JPO&INPIT【課題】 貯水シートに貯水される水の水位を変動させることができるとともに自動で制御することができるようにし、貯水シートに貯水される水の水位の維持を安定させて、被栽培物の収量を向上させる。【解決手段】 横断面U字状に形成され被栽培物1が植え付けられる培地Mを保持する透水性の培地保持シート10と、横断面U字状に形成されて培地保持シート10の下側を収容し水Wを貯水する非透水性の貯水シート20と、培地保持シート10及び貯水シート20を地面より高い位置で支持する支持体40と、貯水シート20に貯水される水Wの水位が最小水位Lになったとき貯水シート20に自動的に水Wを供給し貯水シート20に貯水される水Wの水位が最大水位Hになったとき貯水シート20への水Wの供給を自動的に停止する水供給手段50とを備え、貯水シート20に貯水された水Wを培地保持シート10を介して培地Mに浸透させ被栽培物1の根部1aに吸収させる。【選択図】図1
