To provide a foliage jamming prevention device with a simple and inexpensive configuration, capable of utilizing existing drive force for preventing efficiently, transport jamming of foliage and smoothly performing harvesting work, in a multi furrow type root crop harvester for digging root crops which are cultured along a plurality of rows of furrows simultaneously, and a multi furrow type root crop harvester comprising the same.SOLUTION: A scraping rotor 2 comprising a plurality of scraping claws 21 for scraping foliage is rotatably provided on rotary axes 131, 141 of conveyors 13, 14 which are provided near a place where foliage is left on conveyors 13, 14 for transporting root crops mounted on a multi furrow type root crop harvester 1.SELECTED DRAWING: Figure 3【課題】 複数列の畦に沿って栽培された根菜類を複数列同時に掘り取る多畦式根菜類収穫機において、簡単かつ安価な構成であって、既存の駆動力を活用して効率的に茎葉の搬送詰まりを防止して、円滑に収穫作業を行うことができる、茎葉詰まり防止装置およびこれを備えた多畦式根菜類収穫機を提供する。【解決手段】 茎葉を掻き取る複数の掻取爪２１を有する掻取回転体２が、多畦式根菜類収穫機１に搭載された根菜類を搬送するコンベヤ１３，１４において茎葉が滞留する箇所に近設されている当該コンベヤ１３，１４の回転軸１３１，１４１に回転可能に設けられている。【選択図】 図３
