The present invention provides a structure of a planting board that is lightweight, wear-resistant, clean, and can be used repeatedly. The structure of the planting board is an internal hollow planting machine in which a thermoplastic material is blow-molded, and a plurality of planting holes 31 that are gradually reduced downward from above are laid uniformly on the planting board. Then, a plurality of relatively projecting positioning protrusions 313 are provided inside each planting hole, sandwiched between the peripheral sides of the foam filling member 2, and planted plants that pass through the planting hole using the filling member. Two side recesses 314 that support and are opposed to the upper edge of each planting hole are provided, and the main flow guide groove 33 is provided via a plurality of sub-flow guide grooves 331 and sub-flow guide grooves 332 as necessary. Each planting hole is communicated to distribute the culture solution. [Selection] Figure 5【課題】軽量、耐摩耗であり、かつ清潔で繰り返し使用可能な植栽盤の構造を提供する。【解決手段】植栽盤の構造は、熱可塑性材料をブロー成型した内部中空の植栽盤であり、植栽盤上に複数の上から下向きに徐々に縮小する植栽孔３１を均等に敷設し、各植栽孔内側に複数の相対して突出する位置決め凸部３１３を設け、発泡の充填部材２の周側に挟持させ、充填部材を利用して植栽孔を通過する植栽植物を支持し、且つ各植栽孔上端辺縁に相対する２つの側凹部３１４を設け、主流動ガイド溝３３は、必要に応じてそれぞれ複数の副流動ガイド溝３３１、サブ流動ガイド溝３３２を介して各植栽孔を連通し、栽培液を流通させる。【選択図】図５
