PROBLEM TO BE SOLVED: To reduce the operational burden on the operator.SOLUTION: A transplanter P includes: a position information detection unit for detecting a position of a traveling machine body 1； and control means capable of executing a headland width determination process for determining that the traveling machine body 1 has reached a reference position A' separated by a headland width D0 preset with respect to a ridge side R0, a target direction setting process for setting a target direction L0, and a straight-traveling control process for causing the traveling machine body 1 to travel back and forth along the target direction L0. The control means starts the target direction setting process when the headland width determination process determines in an automatic control mode that the traveling machine body has reached the reference position A'.SELECTED DRAWING: Figure 13COPYRIGHT: (C)2020,JPO&INPIT【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の位置を検出する位置情報検出部と、畦際Ｒ０に対して予め設定された枕地幅Ｄ０を隔てた基準位置Ａ´に走行機体１が達したことを判定する枕地幅判定処理、目標方位Ｌ０を設定する目標方位設定処理、及び走行機体１を目標方位Ｌ０に沿って往復走行させる直進制御処理を実行可能な制御手段と、を備える。制御手段は、自動制御モードにおいて枕地幅判定処理で走行機体が基準位置Ａ´に達すると目標方位設定処理を開始する。【選択図】図１３
