To reduce the operational burden on the operator.SOLUTION: A transplanter P includes control means which is capable of executing: a target direction setting process for setting a straight line L0, which is a target direction, by causing a traveling machine body 1 to travel in one direction； and a straight-traveling control process for causing the traveling machine body 1 to travel back and forth along the straight line L0 on the basis of a position of the traveling machine body 1 detected by a position information detection unit. The control means executes the target direction setting process and the straight-traveling control process in an automatic control mode. The straight-traveling control process is executed based on a planting clutch being connected after the traveling machine body 1 starts turning.SELECTED DRAWING: Figure 13【課題】作業者の操作負担を軽減する。【解決手段】移植機Ｐは、走行機体１を一方向へ走行させることによって目標方位である直線Ｌ０を設定する目標方位設定処理と、位置情報検出部が検出した走行機体１の位置に基づいて走行機体１を直線Ｌ０に沿って往復走行させる直進制御処理と、を実行可能な制御手段を備える。制御手段は、自動制御モードにおいて、目標方位設定処理及び直進制御処理を実行し、直進制御処理は、走行機体１が旋回動作を開始した後に植付クラッチが接続されることに基づいて実行される。【選択図】図１３
