PROBLEM TO BE SOLVED: To provide a working vehicle allowing a change in amount of a jetted fuel of an engine according to soil conditions, a reduction in the number of revolutions of the engine and an improvement in fuel consumption for stabilized soil, and further an increase in the number of revolutions of the engine and stabilization of a traveling attitude for unstable soil.SOLUTION: The working vehicle includes the engine 8 provided in a traveling vehicle body 9 traveling on a field with right and left front wheels 6 and 6 and right and left rear wheels 7 and 7 and a planting part 5 provided for planting seedlings in the field at the rear of the traveling vehicle body 9. The working vehicle includes a soil sensor 10 provided for detecting the conditions of the soil on which the vehicle body travels so that the amount of the jetted fuel of the engine 8 is increased, reduced or controlled according to the soil conditions detected with the soil sensor 10. A cleaning member 12 intermittently contacting the detection surface 11 of the soil sensor 10, and removing attached materials is provided under the soil sensor 10.COPYRIGHT: (C)2012,JPO&INPIT【課題】土壌状態に合わせてエンジンの燃料噴射量を変更し、安定した土壌ではエンジンの回転数を減少させて燃費を向上させると共に、不安定な圃場ではエンジンの回転数を増大させて走行姿勢を安定させることのできる作業車両を提供する。【解決手段】左右の前輪6,6と左右の後輪7,7により圃場を走行する走行車体9にエンジン8を設け、走行車体9の後部に圃場に苗を植え付ける植付部5を設けた作業車両において、走行する土壌の状態を検出する土壌センサ10を設け、土壌センサ10が検出した土壌状態に合わせてエンジン8の燃料の噴射量を増減制御する構成とし、土壌センサ10の下部に、土壌センサ10の検出面11に間欠的に接触して付着物を除去する清掃部材12を設ける。【選択図】 図5
