PROBLEM TO BE SOLVED: To realize reduction of cost required for humidity control and reduction of the disease risk of a plant stock.SOLUTION: A plant cultivation device (100) comprises: a cultivation container (2) an illumination unit (1) and a humidifying hot liquid supply system (30) which supplies hot liquid to the cultivation container (2). The humidifying hot liquid supply system (30) includes a humidifying gutter (33a) whose upper part is open and which houses the hot liquid, the humidifying gutter (33a) is disposed below leaves of plant stocks (6), and a space around the plant stocks (6) is humidified by steam generated from hot liquid.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】湿度制御にかかるコストの低減及び植物株の病害リスクの低減を実現する。【解決手段】植物栽培装置(100)は、栽培容器(2)と、照明部(1)と、栽培容器(2)へ温液を供給する加湿用温液供給システム(30)と、を備え、加湿用温液供給システム(30)は、上部が開口し上記温液を収容する加湿用樋(33a)を備え、加湿用樋(33a)は、植物株(6)の葉よりも下側に配され、温液から発生する蒸気により植物株(6)周辺の空間が加湿される。【選択図】図1
