PROBLEM TO BE SOLVED: To provide a field work machine in which powder/grain of agricultural materials contained in air passing from an air relief conduit to the outside of a machine body is prevented from scattering in the air around the machine body.SOLUTION: A field work machine includes: a supply device for supplying agricultural materials in a field； and a seedling planting device W having a seedling platform 13 where seedlings for planting are placed, and multiple planting arms for taking out the seedlings from the lower part of the seedling platform 13 and planting them in the field. The supply device includes an ejection unit 34 for supplying the agricultural materials in the field, a conveyance conduit 50 for guiding the agricultural materials to the ejection unit 34, a blower for supplying conveyance air to the conveyance conduit 50, and an air relief conduit 60 branched from the conveyance conduit 50 to an orientation opposite to the conveyance direction and capable of branching the conveyance air. A branch target end of the air relief conduit 60 is extended so as to become the height being lower than the lower end of the seedling platform 13.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2020,JPO&INPIT【課題】空気逃し管路から機体外側へ抜ける空気に含まれる農用資材の粉粒を機体周辺の空気中に飛散させない圃場作業機を提供する。【解決手段】圃場に農用資材を供給する供給装置と、植え付け用の苗が載置される苗載せ台１３と、苗載せ台１３の下部から苗を取り出して圃場に植え付ける複数の植付アームと、を有する苗植付装置Ｗと、が備えられ、供給装置に、農用資材を圃場に供給する排出部３４と、農用資材を排出部３４に案内する搬送管路５０と、搬送管路５０に搬送風を供給するブロアと、搬送管路５０から搬送方向と反対の向きに分岐して、搬送風を分流可能な空気逃し管路６０と、が備えられ、空気逃し管路６０の分岐先端部は、苗載せ台１３の下端よりも低い高さとなるように延設されている。【選択図】図５
