PROBLEM TO BE SOLVED: To provide a suitable and efficient constitution for loading a transplanter with a nursery box having flexibility, used for a rice transplanter constructed so as to load a planting part with pot seedlings together with the nursery boxes, push out the seedlings from the nursery boxed as a suitable position in a prescribed conveying route and feed the seedlings to a seedling uprooting part of an implanting rod while conveying the nursery boxes along the conveying route and made flexible at least in the conveying direction because the conveying route of the nursery boxes has a shape including a curved part for restriction of a space in the planting part. SOLUTION: This transplanter is equipped with reserve seedling frames capable of engaging with the upper part of the nursery boxes and hanging and holding the nursery boxes side by side in the left and right direction of the machine in the transplanter for loading the planting planting part with the seedlings raised in the nursery boxes having flexibility together with the nursery boxes.
