PROBLEM TO BE SOLVED: To solve a problem in turning operation in which an operator cannot focus on steering operation in turning due to the necessity of drive-on/off operation of a working device or upward/downward moving operation of the working device in addition to the turning steering operation of a machine body in the turning.SOLUTION: The riding type working machine includes: a traveling vehicle provided with lateral drive wheels and a control unit which detects transmission shaft rotating speed of the drive wheel on the inside of the turning curve which is switched to an idling state, calculates a traveling distance by a traveling distance calculation means based on the detection of the transmission shaft rotating speed of the drive wheel on the inside of the turning curve, and makes a fertilization device automatically operated based on the traveling distance.COPYRIGHT: (C)2013,JPO&INPIT【課題】 旋回時に、操縦者は機体の旋回操向操作以外に、作業装置の駆動の入り切り操作や作業装置の上昇・下降操作をしなければならず、旋回時の操向操作に専念できず、未だ、旋回操作性の点において課題があった。【解決手段】 左右の駆動輪を備える走行車両を設け、遊転状態に切り替えた旋回内側の駆動輪の伝動軸回転数を検出し、旋回内側の駆動輪の伝動軸回転数の検出に基づいて走行距離算出手段にて走行距離を算出し、該走行距離に基づいて施肥装置の作動を自動的に行わせる制御装置を設けたことを特徴とする乗用型作業機とした。【選択図】 図9
