PROBLEM TO BE SOLVED: To provide a transmission of a rice transplanter having the less number of transmission shafts.SOLUTION: In the transmission 100 of a rice transplanter 1, a traveling transmission shaft 104, a PTO transmission shaft 106 and a rear transmission shaft 107 are provided in parallel to a combined output shaft 102, a gear type PTO system power transmission path is formed on the combined output shaft 102, traveling transmission shaft 104 and PTO transmission shaft 106, a gear type traveling system power transmission path is formed on the combined output shaft 102, traveling transmission shaft 104, PTO transmission shaft 106 and rear transmission shaft 107. A rear second transmission gear 172 on the PTO transmission shaft 106 in the gear type traveling system power transmission path is loosely engaged with the PTO transmission shaft 106.COPYRIGHT: (C)2013,JPO&INPIT【課題】伝動軸の数が少ない田植機のトランスミッションを提供する。【解決手段】合成出力軸102と平行に、走行変速軸104と、PTO伝動軸106と、リヤ伝動軸107と、を設け、合成出力軸102、走行変速軸104、及びPTO伝動軸106上に歯車式PTO系動力伝達経路を形成し、合成出力軸102、走行変速軸104、PTO伝動軸106、及びリヤ伝動軸107上に歯車式走行系動力伝達経路を形成し、歯車式走行系動力伝達経路におけるPTO伝動軸106上のリヤ第二伝動ギヤ172は、前記PTO伝動軸106に対して遊嵌される田植機1のトランスミッション100。【選択図】図2