Problem to be solved: to provide a hydroponic apparatus with a root fixing holder capable of properly maintaining root of plants and facilitating water management.Solution: a hydroponic cultivation apparatus 1 comprising a planter 2 and a plant growing plate 3 housed inside the planter 2 is provided with a root fixing holder 32 having three sets of leg portions opposed to each other at equal intervals on the inner edge of the collar portion, and the lower end of the leg is a through hole 30 of the plant growth plate The legs are bent in the center direction, and the sizes of the legs are adjusted in the legs of each pair opposed to each other, and are two or more times as large as the vertical dimension of the through holes.Diagram【課題】植物の根を適切に保持することができる根固定ホルダーを備え、水の管理を容易にした水耕栽培装置を提供する。【解決手段】プランター2と、プランター2の内側に収容される植物育成板3とを備える水耕栽培装置1であって、互いに対向する一組の脚部をつば部の内縁上に等間隔に三組有する根固定ホルダー32を備え、当該脚部は、下端が植物育成板3の貫通孔30の中心方向に曲がった足部を備え、互いに対向する各組の脚部同士において、脚部の寸法を調整し、かつ貫通孔の鉛直方向の寸法の2倍以上である。【選択図】図1
