PROBLEM TO BE SOLVED: To embody a traveling route setting method of a combine that can efficiently generate a traveling route in unmanned work and can smoothly perform a reaping work. SOLUTION: When the combine has map data including position coordinate points corresponding to the contour of the field, and the combine travels along one side of the contour of the field, the position of the traveling route is determined from the position coordinate point on this side. A reference line is generated, and a plurality of parallel lines with respect to the reference line are automatically set at intervals based on the planting intervals of grain culms. Further, the interval for planting the grain culms is detected by a sensor provided in the combine, and the plurality of parallel lines are automatically set at intervals based on the detection result. In addition, before the start of traveling along one side of the contour of the field, the interval for planting the culms is detected. [Selection diagram]【課題】無人作業における走行経路を効率的に生成し、刈取作業を円滑に行えるコンバインの走行経路設定方法を具現すること。【解決手段】圃場の輪郭に対応する位置座標点を含んだ地図データを有し、コンバインがこの圃場の輪郭のうちの一辺に沿って走行した場合に、この一辺の位置座標点から走行経路の基準線を生成し、この基準線に対する複数の平行線を、穀稈の植立間隔に基づいた間隔で自動的に設定する。また、穀稈の植立間隔をコンバインに備えたセンサーによって検出し、この検出結果に基づいた間隔で前記複数の平行線を自動的に設定する。また、圃場の輪郭のうちの一辺に沿う走行の開始前に、穀稈の植立間隔の検出を行なう。【選択図】 図４
