PROBLEM TO BE SOLVED: To solve such the problem that a seal material of a transmission case can be damaged by foreign substances winding around a rotary shaft because a gap that foreign substances enter is defined at a part where the rotary shaft projects from the transmission case.SOLUTION: A seeding transplanting machine includes a land-leveling device driven by receiving power transmitted from an engine. The land-leveling device includes: the transmission case to which power is transmitted from the engine a drive shaft projecting sideward from a boss part that projects sideward from both lateral surfaces of the transmission case via an oil seal a plurality of land-leveling rotors fixed to the drive shaft. In the seeding transplanting machine, a protective member is provided to cover an outside end of the boss part of the transmission case.
