PROBLEM TO BE SOLVED: To provide a self-propelled seedling transplanter in which a seedling-conveying mechanism 13 for intermittently conveying seedlings one by one, a seedling-planting mechanism 14 for planting the seedlings, transferred by the seedling-conveying mechanism 13, in a field by means of a planting member 14a, and a compacting mechanism 15 for compacting the surface of the field by a compacting body 15e, after the seedlings are planted by the seedling-planting mechanism, are installed in a travel machine frame 4 supported on travel wheels 3, and the direction of which can be easily changed in the state of inclining the travel machine frame backward.SOLUTION: The compacting mechanism 15 is constituted so that the compacting body 15e can be flipped up to be greatly lifted from the field. A locking means 15m for detachably locking the compacting mechanism 15 in a flipped-up state is provided on the side of the travel machine frame 4.COPYRIGHT: (C)2008,JPO&INPIT【課題】走行車輪3にて支持した走行機体4に,苗を一本ずつ間欠的に搬送する苗搬送機構13と,この苗搬送機構にて移送した苗を植付け体14aにて圃場に対して植付けるようにした苗植付け機構14と,前記苗植付け機構にて苗を植付けた後の圃場面を鎮圧体15eにて固めるようにした鎮圧機構15とを設けて成る自走式苗移植機において,前記走行機体を後ろ傾斜した状態での方向変換が容易にできるようにする。【解決手段】前記鎮圧機構15を,その鎮圧体15eが圃場から大きく上昇するようにはね上げ可能に構成する一方,前記走行機体4側に,前記鎮圧機構15をそのはね上げた状態に着脱自在に係止する係止手段15mを設ける。【選択図】図1