PROBLEM TO BE SOLVED: To provide hard pots which are suitable for mechanization of a spacing operation and which also help the improvement of operation performance, to provide trays for the hard pots, and to provide seedling spacing methods using them.SOLUTION: The hard pot in the present application has a size at which cultivation pots can be used by being aligned in a lot of rows and columns on a tray, has an opening part (top opening part) on a top surface thereof, and has a flange projecting outward on the peripheral edge of the top opening. The flange can be supported with the arm of an operation device operating culture pots and has such rigidity that the arm does not deform if being supported with the arms of the operation device and lifted, the height of the cultivation pot is set to higher than that of the upper surface of the peripheral walls of the tray or the upper surface of the partition walls of the tray, and is the height at which an insertion space into which the arm of the operation device can be inserted from the side (lateral side) of the cultivation pot is formed between the flange and the upper surface of the peripheral walls or partition walls, when the pot is placed on the tray.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,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】 本願における硬質ポットは、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
