PROBLEM TO BE SOLVED: To provide a seedling-planting device which can detect that mat-like seedlings on a seedling tray have been reduced to the set residual quantity or smaller, using a simple structure.SOLUTION: This seedling-planting device includes: a seedling-planting mechanism for taking out seedlings from mat-like seedlings loaded on a seedling tray and planting the taken seedlings in a field longitudinal conveyers for longitudinally conveying the mat-like seedlings loaded on the seedling tray toward seedling supply ports a seedling conveyance detecting means 90 for detecting the mat-like seedling longitudinal conveyance on the seedling tray in such a state that the longitudinal conveyers are operated and a control means 95 for controlling the longitudinal conveyers, on the basis of detection information of the seedling conveyance detecting means 90 is such that the control means 95 detects that the mat-like seedlings are not reduced to a set residual quantity or less, when the longitudinal conveyers are operated to input the detection information with the seedling conveyance detecting means 90, and also detects that the mat-like seedlings are reduced to the set residual quantity or smaller, when the detection information of the seedling conveyance detecting means 90 is not input, even if the longitudinal conveyers are operated.COPYRIGHT: (C)2009,JPO&INPIT【課題】 苗載せ台のマット状苗が設定残量以下に減少したことの検出を構造簡単にできる苗植付け装置を提供する。【解決手段】 苗植付け機構が、苗載せ台に載置されたマット状苗から苗取り出しするとともに取り出し苗を田面に植え付ける。苗載せ台に載置されたマット状苗を苗供給口に向けて縦送りする縦送り搬送体と、縦送り搬送体が作動操作された状態での苗載せ台のマット状苗の縦移動量を検出する苗移動量検出手段90とを備えている。苗移動量検出手段90による検出情報を基に縦送り搬送体を制御する制御手段95を備えている。制御手段95は、縦送り搬送体が作動して苗移動量検出手段90による検出情報を入力すると、マット状苗が設定残量以下に減少していないと検出し、縦送り搬送体が作動しても苗移動量検出手段90による検出情報を入力しないと、マット状苗が設定残量以下に減少したと検出する。【選択図】 図16
