A single-grain sowing machine having a sowing disc (3) forming a front wall ofaseed hopper (2) is described, which comprises a fixed disc body (4) suctionedonthe side facing away from the seed hopper (2) having at least one guide slot(5),and a conveyor disc (6), pressing against the disc body (4) on the side of theseedhopper (2) and drivable around a horizontal axis, having driver slots (7)distributedaround the circumference and extending over the radial extension area of theguide slot (5), which form intake openings (8) for the seed grains dispensablefromthe seed hopper (2) along the guide slot (5) in the overlap area with theguide slot(5). In order to be able to perform simple residual emptying of the seedhopper (2),it is proposed that the seed hopper (2) have a floor in the form of anemptying flap(17), which is pivotable coaxially to the sowing disc (3) between a closedpositionand an open position.
