The invention provides a work vehicle, which does not need any stand-by time when the vehicle is stopped, and enables a work machine to rise in a shorter time during backward driving, and prevents speed of backward driving from excessively rising. A driving vehicle body is provided with a seedling planting device capable of being freely lift up and down, an engine, a variable speed gear which changes speed of the power of the engine and drives the driving device, and a driving operation rod which operates the variable speed gear to change the driving speed. The driving operation rod can be operated to a forward driving area, a forward and backward stop area and a backward driving area in order. The work vehicle also comprises a control device which controls the rotating speed of the engine and is arranged corresponding to the operation position of the driving operation rod. The control device enables the rotating speed of the engine when the driving operation rod is operated to a position adjacent to a low-speed side to be higher than the rotating speed of the engine when the driving operation rod is operated to the highest position in the backward driving area.本發明提供一種作業車輛，不需要行駛停止狀態下的待機時間，能夠使作業機在後退行駛中以比以往更短的時間上升，並且能夠防止後退行駛時的行駛速度過度上升。在行駛車體升降自如地設置秧苗插植裝置，在行駛車體設置發動機，設置對發動機的動力進行變速並向行駛裝置進行傳動的變速裝置，設置操作變速裝置以改變行駛速度的行駛操作桿，行駛操作桿構成為能夠被依次操作至前進行駛區域、前進後退停止區域及後退行駛區域，設置與行駛操作桿的操作位置對應地控制發動機轉速的控制裝置，控制裝置使當行駛操作桿被在後退行駛區域內操作到相對最高速位置靠低速側的操作位置時的發動機轉速高於當行駛操作桿被在後退行駛區域內操作到最高速位置時的發動機轉速。
