PROBLEM TO BE SOLVED: To provide a water culture device capable of cultivating a plant and performing dormancy breakage of a plant continuously.SOLUTION: A water culture device 100 comprises: a ground surface part 12 comprising an open hole 12a into which a plant 10 is inserted, and partitioning an underground space 11a where an underground part 10b of the plant 10 grows, and a ground space 1121 where a ground part 10d of the plant 10 grows； a culture tank 11 for forming the underground space 11a so as to include the underground part 10b with the ground surface part 12； embryo promotor supply parts 1000, 2000 for supplying an embryo promotor 3 stored in an embryo promotor storage part 30 to any one of the ground parts 10d, 20d and the underground parts 10b, 20b； and a control part 40 for controlling a manner of supplying of the embryo promotor 3 to the plants 10, 20 by the embryo promotor supply parts 1000, 2000, in the water culture device 100, by controlling the manner of supplying the embryo promotor 3 to the plant 10, dormancy breakage of the plant 10 and culture of the plant 10 can be performed on the same water culture device.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】植物の休眠打破とその植物の栽培とを継続して行うことができる水耕栽培装置を提供する。【解決手段】水耕栽培装置１００は、植物１０が挿入される貫通孔１２ａを有し、植物１０の地下部１０ｂが成長する地下空間１１ａと植物１０の地上部１０ｄが成長する地上空間１１２１とを仕切る地表面部１２と、地表面部１２とともに地下部１０ｂを内包するように地下空間１１ａを形成する栽培槽１１と、地上部１０ｄ，２０ｄおよび地下部１０ｂ，２０ｂの少なくともいずれか一方へ萌芽促進剤貯留部３０に貯留されている萌芽促進剤３を供給する萌芽促進剤供給部１０００，２０００と、萌芽促進剤供給部１０００，２０００が植物１０，２０へ萌芽促進剤３を供給する態様を制御する制御部４０と、を備え、植物１０へ萌芽促進剤３を供給する態様を制御することにより、植物１０の休眠打破とその植物１０の栽培とを同一の水耕栽培装置１００において行う。【選択図】図１
