PROBLEM TO BE SOLVED: To provide a plant growing device in which achieved is that an underground part of a plant is highly shielded from light.SOLUTION: A plant growing device for growing a plant that accumulates, in an underground part B, nutrients synthesized in an above-ground part A and forms a tuber in the underground part B, comprises: a light source part 20 that irradiates light to the above-ground part A of a plant a cultivation tank 1 that supports the underground part B of a plant a light shielding sheet 2 that is provided on the cultivation tank 1 and blocks irradiation of light to the underground part B of a plant a camera 3 that detects a tuber 100 in the underground part B of a plant and a control panel 32 that controls a position of light irradiation by the light source part 20 in response to the detection of the tuber 100 by the camera 3 so that the light is not irradiated to the tuber 100.COPYRIGHT: (C)2014,JPO&INPIT【課題】植物の地下部への高い遮光を実現することができる植物育成装置を提供する。【解決手段】地上部Aで合成した養分を地下部Bに蓄積して当該地下部Bに塊茎100を形成する植物を育成する植物育成装置であって、植物の地上部Aに光を照射する光源部20と、植物の地下部Bを支持する栽培槽1と、栽培槽1に設けられ、植物の地下部Bへの光の照射を遮る遮光シート2と、植物の地下部Bにおける塊茎100を検出するカメラ3と、カメラ3により塊茎100が検出されたことに応じて、当該塊茎100へ光が照射されないよう光源部20による光照射位置を制御する制御盤32とを備える。【選択図】図1
