PROBLEM TO BE SOLVED: To provide a seedling raising device capable of preventing the looping phenomenon of roots.SOLUTION: A seedling raising device has a cylindrical body 2 composed of a biodegradable sheet member, and a rib unit 3 that has a plurality of bar-shaped parts 3b,3b disposed along a side wall inner surface 2b of the cylindrical body 2 and extending vertically, and a connection part 3a for connecting the bar-shaped parts 3b,3b.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】根のルーピング現象の発生を抑制できる育苗用装置を提供する。【解決手段】生分解性のシート部材から成る筒状体2と、筒状体2の側壁内面2bに沿って複数配置される上下方向に延びる棒状部3b,3b,…と棒状部3b,3b,…同士を連結する連結部3aとを備えるリブユニット3と、から成る。【選択図】図4
