PROBLEM TO BE SOLVED: To provide a seeding machine capable of retaining the capacity of a feed groove at a fixed level by removing seeds and impurities accumulated in the feed groove of a feed roll while feeding seeds.SOLUTION: The seeding machine includes a seeding device composed of a feed rotator 5 with feed grooves 4 formed in a rotating peripheral surface and a cleaning member 6 in contact with the rotating peripheral surface of the feed rotator 5 in the rear of a travelling vehicle having front wheels and rear wheels. The seeding machine also includes: a cleaning member vertically moving mechanism for moving the cleaning member 6 in the vertical direction according to the rotation of the feed rotator 5 a blower device for blowing air to the feed grooves 4 in a non-feeding part after feeding of seeds by the feed rotator 5 till next seeds are received and a monitoring device for monitoring the feed grooves 4 of the feed rotator 5 in the non-feeding part.COPYRIGHT: (C)2012,JPO&INPIT【課題】種子の繰出作業中に、繰出ロールの繰出溝に蓄積した種子や夾雑物を取り除き、繰出溝の容量が一定に保たれる播種機を提供する。【解決手段】前輪と後輪を備える走行車体の後部に、回転周面に繰出溝4を形成した繰出回転体5と、繰出回転体5の回転周面に接触する清掃部材6で構成した播種装置を設けた播種機において、繰出回転体5の回転に合わせて清掃部材6を上下動させる清掃部材上下動機構を設け、繰出回転体5が種子を繰り出してから次の種子を受けるまでの非繰出作用部で繰出溝4に送風する送風装置を設けると共に、非繰出作用部で繰出回転体5の繰出溝4を監視する監視装置を設けて構成する。【選択図】 図5