Provided is a rice planting machine that can improve durability of a drive transfer mechanism by reducing pitting and chipping of teeth occurring in an intermediate gear by reducing deflection in an intermediate axle within a rear axle case. In a rice planting machine which transfers mechanical power to a rear axle case from an engine via a transmission case an intermediate gear is provided as a reduction mechanism within the rear axle case and a bearing that supports the intermediate axle mating with the intermediate gear and a bearing holder for holding the bearing are also provided. The bearing holder is affixed to the rear axle case using a plurality of bolts and a plurality of reamer bolts.
