PROBLEM TO BE SOLVED: To eliminate disorder of a posture of a ground implement even during farm working so as to repeat left and right tilting of a machine body at a fine period by constitution in which the ground implement is mounted on an agricultural work vehicle.SOLUTION: The ground implement is mounted on the agricultural work vehicle so as to enable rolling, and the ground implement is subjected to rolling control on a detected signal with a tilt sensor and an angular velocity sensor disposed in a traveling machine body of the agricultural work vehicle. A control selective switch is disposed for performing changeover so that the rolling control is carried out on the basis of a detected value with the angular velocity sensor when the angular velocity sensor detects an angular velocity of a prescribed value or above, and the rolling control is carried out by ignoring the detected signal with the angular velocity sensor. The constitution of the agricultural work vehicle is characterized by comprising optionally performing changeover operation of the control selective switch so as to carry out the rolling control on the detected signal with only the tilt sensor.COPYRIGHT: (C)2010,JPO&INPIT【課題】本発明では、農作業機に対地作業機を装着した構成で、機体の左右傾きが細かい周期で繰り返されるような農作業中にも、対地作業機の姿勢が乱れることが無いようにすることを課題とする。【解決手段】農作業機に対地作業機をローリング可能に装着し、農作業機の走行機体に設けた傾斜センサと角速度センサの検出信号で対地作業機をローリング制御するにあたり、前記角速度センサが所定値以上の角速度を検出すると角速度センサの検出値に基づいてローリング制御を行なうと共に、角速度センサの検出信号を無視してローリング制御を行うように切り換える制御選択スイッチを設け、必要に応じて制御選択スイッチの切り換え操作を行って傾斜センサのみの検出信号でローリング制御すべく構成したことを特徴とする農作業機の構成とする。【選択図】図3