PROBLEM TO BE SOLVED: To optimize a planting depth, to improve planting accuracy, to improve workability, to improve operability, and to prevent the interference of a member.SOLUTION: In a seedling transplanter, a traveling device (4), a seedling transfer part (5) for transferring seedlings, a seedling planter (6) for planting the seedlings transferred to a planting supply position (A) by the seedling transfer part (5) into a farm field, and a sensor (17) for detecting a height of a farm field face are arranged, the seedling planter (6) is lift-controlled so as to be maintained at a desired grounding height on the basis of the detection of the sensor (17), the sensor (17) detects the height of the farm field face by the grounding of a main grounding portion (17a) which is wide in left and right widths and a sub-grounding portion (17b) which extends from the rear side of the main grounding portion (17a) and is narrow in left and right widths, and the sub-grounding portion (17b) is located in a center position of the left and right of the main grounding portion (17a), and in a position which is displaced to one side of the left and right of the planting supply position (A), and also in a lower position of the seedling transfer part (5) in a machine-side plane view.COPYRIGHT: (C)2014,JPO&INPIT【課題】 本発明は、植付深さの適正化、植付精度の向上、作業性の向上、操作性の向上、及び部材の干渉防止を図ることを課題とする。【解決手段】 走行装置(4)と、苗を搬送する苗搬送部(5)と、苗搬送部(5)によって植付供給位置(A)へ搬送された苗を圃場に植付ける苗植付け装置(6)と、圃場面の高さを検出するセンサ(17)とを設け、センサ(17)の検出に基づいて苗植付け装置(6)を所望の対地高さに維持するべく昇降制御する構成とし、センサ(17)は、左右幅の大きい主接地部分(17a)と、主接地部分(17a)から後側に延びる左右幅の小さい副接地部分(17b)とが圃場に接地して圃場面の高さを検出する構成とし、副接地部分(17b)を、主接地部分(17a)の左右中央位置及び植付供給位置(A)の左右一方側に偏位する位置で且つ機体側面視で苗搬送部(5)の下方位置に配置した苗移植機とした。【選択図】図1
