To prevent the shutting down of transmission rotation of a leveling auger ON the front side of a float of a seedling transplanting apparatus from being forgotten when the auger is elevated to a nonworking position. SOLUTION: The leveling auger in a seedling transplanter is constructed in such a manner that the transmission of a leveling auger 3 placed in a vertically movable manner ON the front side of the float 2 which supports the seedling transplanting apparatus 1 and slides is shut down under interlocking with the elevation of the auger 3 to the nonworking position.