PROBLEM TO BE SOLVED: To provide a configuration capable of supplying seedlings efficiently from a ridge to a preliminary seedling platform.SOLUTION: A rice transplanter 1 comprises a vehicle body 2, a planting part 3, and a plurality of preliminary seedling platforms 31. The planting part 3 is arranged behind the vehicle body 2 capable of traveling. Each preliminary seedling platform 31 has a loading surface on which preliminary seedlings to be supplied to the planting part 3 can be loaded. Each preliminary seedling platform 31 is formed in a substantially rectangular shape in a plane view and can move between a first position protruding toward the front side of the vehicle body 2 and a second position on the rear side from the first position, while maintaining a direction of the loading surface. The preliminary seedling platform 31 at the first position and the preliminary seedling platform 31 at the second position are both arranged so that the longer direction thereof is arranged along a longitudinal direction. The movement of two preliminary seedling platforms 31 is mechanically interlocked so that the preliminary seedling platform 31 at the second position moves to the first position by moving the preliminary seedling platform 31 at the first position to the second position.SELECTED DRAWING: Figure 2
