Agricultural machine comprising a plurality of drilling units, each (2) 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
