PROBLEM TO BE SOLVED: To provide a lightweight pot-housing tray having a simple structure, being readily produceable, scarcely causing warping and extremely effective for growth of seedlings. SOLUTION: In the pot-housing tray, the interior of an outer frame 3 is partitioned into a plurality of partition parts 11 by ribs 11a and 11b and corners-cut squares are formed in angle parts 12 with which each partition part 11 and supporting legs 13 are extended from the corners-cut squares in the crossing parts of the ribs 11a and 11b and the peripheries of bottom frames 14 are connected to the supporting legs 13 and recessed nursery pot housing parts 10 are connected to each other thereby, and an aeration port 15 for aeration is provided in a plurality of parts of each corner part 12 and the aeration port 15 is surrounded and a reinforcing rib 17 connected to the supporting leg 13 extended from the corner part 12 can be formed on the rear surface side of the corner part 12 equipped with the aeration port 15 or a continuous or discontinuous slip-preventing projection enclosing the aeration port 15 can be formed on the surface side of the corner part 12 equipped with the aeration port 15. COPYRIGHT: (C)2005,JPO&NCIPI
