PROBLEM TO BE SOLVED: To provide a seedling-supplying device of a transplanter, in the transplantation and cultivation of field crops, for relatively thick and slender seedlings such as the bare seedlings of Welsh onion, which can supply and transplant even thin seedlings or thick seedlings at a constant space.SOLUTION: The seedling-supplying device of the transplanter is characterized by disposing mark projections 22a on the surface of a seedling space-controlling belt 22 at a prescribed space matching to a space between seedlings to be transplanted, disposing a thick seedling projection 22b at a distance matching to the thick seedling from the mark projection 22a, disposing a thin seedling projection 22c at a distance matching to the thin seedling from the mark projection 22a, forming the mark projection 22a and the thick seedling projection 22b at relatively large heights matching to the thick seedling, and forming the thin seedling projections 22c at a relatively small height matching to the thin seedling.COPYRIGHT: (C)2013,JPO&INPIT【課題】 農作物の移植栽培で、長ネギの裸苗のように比較的太くて細長い苗の苗供給装置に関し、細い苗でも太い苗でも一定間隔に苗を供給し一定の間隔に植えつけられる移植機の苗供給装置を提供する。【解決手段】 株間規制ベルト22の表面に目印突起22aを植え付ける株間に合わせた所定間隔に設け、目印突起22aから太い苗に合わせた距離を開けて太苗突起22bを設け、目印突起22aから細い苗に合せた距離を開けて細苗突起22cを設け、目印突起22aと太苗突起22bは太い苗に合わせた比較的高い高さとし、細苗突起22cは細い苗に合せた比較的低い高さとした。【選択図】図7