This seedling transplanter is provided at the front of a planting unit with a ground leveling device for headland leveling the power to drive the ground leveling device is transmitted from an engine via a rear axle case the rear axle case is provided with a clutch mechanism that transmits or blocks power to the ground leveling device the clutch mechanism comprises a first connected tool connected to a member that moves in association with the raising of the planting unit and the clutch mechanism is disconnected by the first connected tool being operated in association with the raising of the planting unit. Because of this invention it is possible to provide a configuration in which the clutch mechanism can be securely disconnected and connected with a simple configuration and which can also easily be applied to existing seedling transplanters.
