PROBLEM TO BE SOLVED: To provide a seedling transplanter in which a seedling planting device does not operate even if touching a going up and down operation device by mistake when a traveling operation lever is operated in the seedling transplanter in which the going up and down operation device of the seedling planting device is disposed at a traveling operation lever, and which can operate the travel speed and the going up and down of the seedling planting device by one hand.SOLUTION: A seedling planting device 6 includes: a float 1 that contacts to a field surface a seedling tank 3 that sends off a loaded mat seedling to a seedling taking mouth 2 a planting device 5 that holds the seedling from the seedling taking mouth 2 by a planting claw 4 and plants the seedling. In the seedling transplanter in which the seedling planting device 6 is disposed at the back part of a traveling vehicle body 7 to be able to go up and down, a going up and down operation tool 11 making the seedling planting device 6 go up and down is disposed at the operation holding part of a traveling operation lever 10 performing the planting traveling operation of the traveling vehicle body 7, and the operation of a continuous operation time during from the going up and down operation tool 11 being operated to a going up and down operation is nullified when the traveling operation lever 10 is operated in a traveling position, or is operated to change the speed, and the seedling transplanter is in a travel condition.COPYRIGHT: (C)2013,JPO&INPIT【課題】走行操作レバーに苗植装置の昇降操作装置を取り付け、走行速度や苗植装置の昇降を片手で操作できる苗移植機において、走行操作レバーを操作する際に誤って昇降操作装置に触れても、苗植装置が作動しない苗移植機を提供する。【解決手段】圃場面に接触するフロート1と、積載したマット苗を苗取口2に送り出す苗タンク3と、苗取口2から植付爪4で苗を保持して植え付ける植付装置5で苗植装置6を構成し、苗植装置6を走行車体7の後部に昇降可能に取り付けた苗移植機において、走行車体7の植付走行操作を行う走行操作レバー10の操作把持部に、苗植装置6を昇降する昇降操作具11を設け、走行操作レバー10を走行位置に操作、または変速操作して苗植機が走行中の状態にあるときは、昇降操作具11が操作されてから昇降作動までの間の連続操作時間の操作を無効とする所定の牽制時間Tを設定する。【選択図】 図3