PROBLEM TO BE SOLVED: To improve maintenance of power transmission mechanism and to excellently maintain the right and left balance of machine body.SOLUTION: A planting implement 6 is equipped with a lateral frame 9 of right and left directions, a seedling placing stand 12 supported movably right and left on the lateral frame 9, a transverse feed mechanism for reciprocating and driving the seedling placing stand 12 right and left, a planting part that is arranged below the seedling placing stand 12, scraps seedlings on the seedling placing stand 12 and plants the seedlings in a field, an implement transmission case 19 to which a power from a traveling machine body side is inputted, a transmission shaft 21 of the right and left direction which is rotatably supported on the lateral frame 9 and transmits power in the implement transmission case 19 to a planting part side and a transverse feed transmission case 24 that transmits power at the implement transmission case 19 side to the transverse feed mechanism side. The implement transmission case 19 is arranged in the vicinity of the center in the right and left direction of the traveling machine body on the rear view, and the transverse feed transmission case 24 is formed separately from the implement transmission case 19 and adjacently arranged at the implement transmission case 19 side.COPYRIGHT: (C)2010,JPO&INPIT【課題】動力伝動機構のメンテナンス性を向上させるとともに機体の左右バランスを良好に保つ。【解決手段】植付作業機6が、左右方向の横フレーム9と、横フレーム9に対して左右移動可能に支持された苗載せ台12と、苗載せ台12を左右往復駆動させる横送り機構と、苗載せ台12下方に配置され苗載せ台12上の苗を掻き取って圃場に植付ける植付部と、走行機体側からの動力が入力される作業機伝動ケース19と、横フレーム9に対して回転可能に支持されて作業機伝動ケース19内の動力を植付部側に伝動する左右方向の伝動軸21と、作業機伝動ケース19側の動力を横送り機構側に伝動する横送り伝動ケース24とを備え、作業機伝動ケース19を背面視走行機体の左右方向中心付近に配置した移植機において、横送り伝動ケース24を作業機伝動ケース19とは別体で成形するとともに作業機伝動ケース19側方に隣接配置する。【選択図】図2