PROBLEM TO BE SOLVED: To prevent the empty planting of seedlings in automatic lifting control on turn.SOLUTION: A rice transplanter 1 includes a planting portion 3 capable of being lifted and lowered upward and downward, a planting clutch 50 for controlling the connection or disconnection of the planting portion 3 to a driving force, and a control portion for performing automatic lifting or lowering control on turn for controlling the lifting or lowering of the planting portion 3 and the planting clutch 50 on the turn of the vehicle body. On the automatic lifting or lowering control on turn, the control portion automatically lowers the planting portion 3 at a prescribed timing during the turn or after the turn. The control portion controls to connect the planting clutch 50 to restart the planting of seedlings, when the vehicle body reaches a planting-restarting position corresponding to a planting-interrupting position before the start of the turn, after the finish of the turn. The control portion changes a timing for lowering the planting portion 3 in response to the travel speed of the vehicle body.【課題】旋回時自動昇降制御において苗の空植えを防止する。【解決手段】田植機１は、上下に昇降可能な植付部３と、植付部３への駆動力を断接制御する植付クラッチ５０と、車体旋回時に植付部３の昇降及び植付クラッチ５０を制御する旋回時自動昇降制御を行う制御部と、を備える。旋回時自動昇降制御において、制御部は、旋回中又は旋回終了後の所定のタイミングで植付部３を自動的に下降させる。また制御部は、旋回終了後に、旋回開始前の植付中断位置に対応する植付再開位置まで車体が到達したときに植付クラッチ５０を接続して植付を再開する。そして当該制御部は、植付部３を下降させるタイミングを、車体の走行速度に応じて変更する。【選択図】図１
