PROBLEM TO BE SOLVED: To provide a hard pot and a tray for the hard pot which are suitable for mechanizing a spacing work and also contribute to workability improvement, and a spacing method of seedling using the pot and the tray.SOLUTION: A hard pot of the present invention has a size where a large number of cultivation pots are arrayed vertically and horizontally on a tray and can be used, includes an opening part (upper surface opening part) on a top surface, and includes a flange protruding outward on a peripheral edge of the upper surface opening part. The flange is supportable by an arm of an operation apparatus which operates the cultivation pot, and equipped with rigidity in which the flange is not distorted even when it is supported and lifted by the arm of the operation apparatus. A height of the cultivation pot is higher than a height of a top surface of peripheral walls of the tray or a top surface of partition walls of the tray, and is a height that an insertion space through which the arm of the operation apparatus can be inserted from side (laterally) of the cultivation pot is formed between the top surface of the peripheral walls or the partition walls and the flange when mounted on the tray.COPYRIGHT: (C)2015,JPO&INPIT【課題】 スペーシング作業の機械化に適し、作業性向上の一助ともなる硬質ポットとその硬質ポット用のトレイとこれらを用いた苗のスペーシング方法を提供する。【解決手段】 本発明の硬質ポットは、栽培ポットがトレイに縦横に多数列並べて使用できる大きさであり、上面に開口部(上面開口部)を備え、前記上面開口部の周縁に外側に突出する鍔を備え、前記鍔は栽培ポットを操作する操作機器のアームで支持可能であり、操作機器のアームで当該鍔を支持して持ち上げても変形しない剛性を備え、前記栽培ポットの高さは、前記トレイの周壁の上面又はトレイの区画壁上面の高さよりも高く、トレイに載せるとそれら周壁又は区画壁の上面と前記鍔との間に、操作機器のアームを栽培ポットの横(側方)から差込み可能な差込み空間が形成される高さとしたものである。【選択図】図1
