PROBLEM TO BE SOLVED: To provide a rice transplanter which can prevent a travel due to an error operation during a seedling-adding work, and to provide a rice transplanter which can prevent the lack of seedlings due to an error operation during a seedling-planting travel.SOLUTION: The rice transplanter 1 having a continuously variable transmission 13 for travelling, a planting device 30 for planting seedlings in a field, and a lifting or lowering device 50 for lifting or lowering the planting device 30, includes a speed-changing operation section 63 for performing speed-changing operations, an operation quantity-detecting unit 64 for detecting the operation quantity of the speed-changing operation section 63, an actuator 65 for transmission-operating the continuously variable transmission 13 in proportion to the operation quantity of the speed-changing operation section 63 detected with the operation quantity-detecting unit 64, a seedling-adding switch 62, and a controller 61, wherein the controller 61 controls to negate a signal from the operation quantity-detecting unit 64 to stop the actuator 65, when the seedling-adding switch 62 detects the addition of seedlings.COPYRIGHT: (C)2010,JPO&INPIT【課題】苗継作業中の誤操作による走行を防止する田植機、及び田植え走行中の誤操作による欠株の発生を防止する田植機を提供することを目的とする。【解決手段】走行用の無段変速装置13と、圃場に苗を植え付ける植付装置30と、植付装置30を昇降させる昇降装置50とを有する田植機1において、変速操作を行う変速操作部63と、変速操作部63の操作量を検出する操作量検出手段64と、操作量検出手段64により検出される変速操作部63の操作量に比例して無段変速装置13を変速操作するアクチュエータ65と、苗継スイッチ62と、制御部61とを具備し、制御部61は、苗継スイッチ62が苗継ぎを検出すると、操作量検出手段64からの信号を無効にしてアクチュエータ65を作動させないように制御する。【選択図】図5
