PROBLEM TO BE SOLVED: To simplify a maintenance structure of a delivery part in a paddy field mobile vehicle having a storage part for storing particulate matters and the delivery part for delivering and supplying the particulate matters from the storage part to a paddy surface.SOLUTION: A paddy field mobile vehicle comprises a movement mechanism 53 supporting a storage part 12 in such a manner that it can move freely between a work position where the storage part 12 is connected to a delivery part 13 and a non-work position 2A where the storage part 12 is separated from the delivery part 13. The storage part 12 is provided with an opening/closing part 59 which can be freely operated between an opening position which allows particulate matters to enter into the delivery part 13 from the storage part 12 and a closing position which stops the particulate matters from moving out from the storage part 12.SELECTED DRAWING: Figure 7【課題】粉粒体を貯留する貯留部、及び貯留部から粉粒体を繰り出して田面に供給する繰り出し部を備えた水田作業車において、繰り出し部のメンテナンス構造の簡素化を図る。【解決手段】貯留部１２が繰り出し部１３に接続された作業位置と、貯留部１２が繰り出し部１３から分離して離れた非作業位置Ａ２とに亘って、貯留部１２を移動自在に支持する移動機構５３を備える。粉粒体が貯留部１２から繰り出し部１３に入るのを許容する開位置、及び、粉粒体が貯留部１２から出るのを止める閉位置とに操作自在な開閉部５９を、貯留部１２に備える。【選択図】図７
