PROBLEM TO BE SOLVED: To prevent pulsatory motions causing a planting device to continue to sway back and forth from being generated at rapid acceleration or deceleration so as to prevent the disturbance of the planting intervals of seedlings.SOLUTION: A seedling transplanter includes: a planting interval adjustment lever 11 for adjusting the planting intervals of seedlings a transmission operation lever 6 for operating the traveling speed of a vehicle body 8 that travels in a field when the planting intervals of the seedlings are "wide" a seedling planting device 5 for loading the seedlings at the rear of the vehicle body 8 to send out the seedlings and a planting device 4 for scratching the seedlings from a seedling table 2 by use of a planting claw 1 to plant the seedlings, wherein the planting device 4 is rotated at an inconstant velocity, is further provided with: an engine 9 for supplying driving force to the vehicle body 8 and a hydraulic stepless transmission 7A for accelerating or decelerating a vehicle velocity and a controller 38 for performing control so as to increase or decrease the number of rotations of the engine 9 by operating the transmission control lever 6 after the completion of the acceleration or deceleration or control so as to operate the hydraulic stepless transmission 7A toward an acceleration or deceleration direction.COPYRIGHT: (C)2012,JPO&INPIT【課題】急激な加速または減速の際に、植付装置が前後に振れ続ける脈動が発生することを防止し、苗の植付間隔が乱れることを防止する。【解決手段】苗の植付間隔を調節する植付間隔調節レバー11を設け、苗の植付間隔が「広い」である場合、圃場を走行する車体8の走行速度を操作する変速操作レバー6を設け、車体8の後部に苗を積載して送り出す苗植装置5を設け、苗載台2から植付爪1で苗を掻き取って植え付ける植付装置4を設け、植付装置4を不等速回転する構成とした苗移植機において、車体8に駆動力を供給するエンジン9と車速を増速または減速させる油圧無段変速装置7Aを設け、変速操作レバー6を操作して加速または減速を完了するとエンジン9の回転数を増加または減少させる制御、または油圧無段変速装置7Aを増速または減速方向に作動させる制御行なう制御装置38を設けて構成する。【選択図】 図9
