PROBLEM TO BE SOLVED: To provide a plant cultivation device which facilitates the attachment and detachment of a reflection member.SOLUTION: The plant cultivation device 1 comprises at least one reflection member 13 on at least one side face of four faces of a virtual rectangular parallelepiped cultivation region placed so as to block the side face. The reflection member 13 comprises a plurality of reflective plates 14, 15 placed in parallel in the vertical direction such that a reflective surface thereof which reflects the light from a lighting fixture faces the interior of the cultivation region and is configured such that vertically adjacent reflective plates 14, 15 are connected to each other. The connection between reflective plates 14, 15 is formed from a slit-shaped insertion port 14b extending in the horizontal direction in one of the reflection plates 14, 15 and protruding insertion pieces 14a, 15a formed with a protrusion in a direction which prevent the same from slipping out due to the added weight when inserting into the insertion port 14b formed on the other reflective plates 14, 15, and is formed so as to be engaged when the insertion pieces 14a, 15a are inserted into the insertion port 14b.SELECTED DRAWING: Figure 3【課題】反射部材の取り付けおよび取り外しを容易に行うことができる植物栽培装置を提供する。【解決手段】植物栽培装置1は、仮想直方体状の栽培領域の４つの側面のうち少なくとも１つの側面に反射部材13が、前記側面を塞ぐように少なくとも１つ配置されている。反射部材13は、灯具の光を反射させる反射面が栽培領域内側に向けられて上下方向に並列状に配置された複数の反射板14,15からなって、上下に隣り合う反射板14,15どうしが連結されることにより構成されている。反射板14,15どうしの連結は、水平方向にのびたスリット状の差込口14bが一方の反射板14,15に形成され、前記差込口14bに差し込まれたときに加重による抜けが阻止される方向に凸となった差込片14a,15aが他方の反射板14,15に形成され、前記差込片14a,15aが前記差込口14bに差し込まれて係止されることによりなされている。【選択図】図３
