PROBLEM TO BE SOLVED: To provide a hydroponic apparatus capable of suppressing the generation of algae in a medium when cultivating a root vegetable.SOLUTION: According to the present invention, a hydroponic apparatus 100 has an opening 41 having such a size that the tip of a stem 921 extending from a top end portion 9A of the main root 99 of the root vegetable 9 can pass through and comprises a light shielding part 4 covering a culture medium 3 so that a portion other than the opening 41 blocks the arrival of light from a light source 5 to the culture medium 3. The light shielding part 4 is positioned between the top end portion 9A and a leaf 922 when the top end portion 9A projects upward from the culture medium 3 and the leaf 922 grows from the stem 921.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】根菜類を栽培するときに培地での藻の発生を抑制する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、根菜類9の主根99の頂頭部9Aから伸長する茎921の先端が通過できる程度の大きさを有する開口41を有し、開口41以外の部分が光源5から培地3への光の到達を遮るように培地3を覆う遮光部4を備え、遮光部4は、頂頭部9Aが培地3から上方へ突出しかつ茎921から葉922が成長した場合に、頂頭部9Aと葉922との間に位置付けられている。【選択図】図4
