PROBLEM TO BE SOLVED: To provide an irrigation tray capable of further improving flexure rigidity of a bottom wall over omni-direction on a plane where the bottom wall extends.SOLUTION: An irrigation tray 10 formed of a synthetic resin for storing a seedling pot comprises a tray body 11 having a bottom wall 12, the bottom wall 12 comprising: a plurality of first projections 14 raised from the bottom part by first upper bottom dimension and extending in a longer direction thereof； and a plurality of second projections 15 raised from the bottom wall 12 by second upper bottom dimension being smaller than the first upper bottom dimension, and extending in a short direction of the bottom wall 12 in a state of traversing the plurality of first projections 14.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】底壁の曲げ剛性をその広がる面上の全方向に亘ってより向上できる潅水トレーを提供する。【解決手段】苗ポットを収納する合成樹脂製の潅水トレー１０は、底壁１２を有するトレー本体１１を備え、底壁１２は、第１上底寸法で底部から上げ底され、その長手方向に延在する複数の第１突条１４と、第１上底寸法よりも小さい第２上底寸法で底壁１２から上げ底され、複数の第１突条１４を横断する状態で底壁１２の短手方向に延在する複数の第２突条１５とを有する。【選択図】図１
