PROBLEM TO BE SOLVED: To provide a work vehicle in which an operator can adjust a start timing of lowering, when performing a work, while reciprocating in a field by a traveling machine body.SOLUTION: A work vehicle is provided with control means for setting an implement lowering start line based on a position at a turning start time of a traveling machine body 2 to be performed on a field end, for calculating the position of the traveling machine body 2 based on a steering operation by a steering part and on a travel distance by travel devices 5, 6, and for starting lowering of the implement, when reaching the implement lowering start line in the state where turning of the traveling machine body 2 is finished, and is further provided with an implement operation tool for lifting/lowering the implement. Lowering of the implement is stopped temporarily by performing long lifting operation as long as a prescribed time or longer by the implement operation tool.SELECTED DRAWING: Figure 19【課題】圃場を走行機体で往復しながら作業を行う際に、オペレータが下降開始のタイミングを調節可能な作業車輌を提供する。【解決手段】圃場端で行われる走行機体2の旋回開始時の位置を基準に作業機下降開始線を設定し、操向部による操向操作及び走行装置5、6による走行距離に基づいて走行機体2の位置を算出し、走行機体2が旋回を完了した状態で作業機下降開始線に達すると、作業機の下降を開始する制御手段と、作業機を昇降する作業機操作具と、を設け、作業機操作具が所定時間以上の長上げ操作をされることにより一時的に作業機の下降が休止されることとした。【選択図】図19
