Agricultural machine comprising a plurality of drilling units (2) each comprising a support device (21), a seed metering device (8) to distribute seeds to a drill furrow (9a) in the ground (9) across which the agricultural machine (1) moves, wherein each drilling unit (2) is movably connected with a structural member (3) of the agricultural machine and the seed metering device (8) is fixedly connected with the support device (21) of the drilling unit (2), the seed metering device (8) comprising a seed metering element (803) that, by means of a driving device, is arranged to transport seeds to a seed metering line (812), a chamber (882) for seeds (92), which chamber (882) is arranged to be supplied with a positive pressure from a pressure-creating member (880) of the agricultural machine, wherein the seed metering element (803) constitutes a wall limiting the chamber (882) and has holes (804) or recesses, which connect the chamber (882) with the surroundings to develop a pressure difference and thereby attach and transport seeds at said holes/recesses (804) of the seed metering element (803), characterized in that the seed metering line (812) has an inlet (814) in the chamber (882), wherein an air flow out of the seed metering device through the seed metering line (812) is created by said positive pressure in the chamber (882) for the transportation of the seeds from the chamber (882) through the seed metering line (812) to the drill furrow (9a)； and in that each drilling unit comprises a pressing wheel (12) configured to slow down the speed of the seed to zero in relation to the ground and press down the seed into the bottom of the drill furrow.
