GRAIN CULM REAPING WORK METHOD

To provide a grain culm reaping work method that provides high grain culm reaping work efficiency and is capable of mitigating a calculation amount of a processing unit for setting a travel route of a combine-harvester.SOLUTION: After coordinate rotation is performed so that any side of a first region agrees with a coordinate axis of a virtual coordinate system on a controller on the basis of positions of first points at four corners of a preset quadrangular first region and a rectangular or square second region in which a combine-harvester is to automatically travel from a first point after the coordinate rotation to perform reaping work is set, a processing unit sets, on the virtual coordinate system on the basis of positions of second points at four corners of the second region and a reaping width of a reaping device, a travel route circling in the counterclockwise direction on which the combine-harvester is to automatically travel. The coordinate rotation is executed by taking a side adjacent in the counterclockwise direction to the side nearest to the current position of the combine-harvester of sides of the first region as a reference.SELECTED DRAWING: Figure 11 【課題】穀稈の刈取作業効率が高く、コンバインの走行経路を設定する処理部の計算量を軽減することができる穀稈の刈取作業方法を提供する。【解決手段】予め設定された四角形状の第１領域の４隅の第１ポイントの位置に基づいて第１領域のいずれかの辺がコントローラ上の仮想座標系の座標軸に一致するように座標回転を行って、この座標回転後の第１ポイントからコンバインが自動走行して刈取作業を行う長方形状又は正方形状の第２領域を設定した後に、処理部は、第２領域の４隅の第２ポイントの位置と刈取装置の刈幅に基づいて、コンバインが自動走行する反時計方向に周回する走行経路を仮想座標系上で設定し、座標回転は、第１領域の辺のうち、コンバインの現在位置に最も近い辺に反時計方向で隣接する辺を基準に実行される。【選択図】図１１