Agricultural machine embracing at least one drilling unit (2) in turncomprising a support device (21) as well as aseed metering device (8), the drilling unit (2) being movably connected with astructural member (3) embraced by the agriculturalmachine. The seed metering device (8) is fixedly connected with the supportdevice (21) of the drilling unit (2) and the seed meteringdevice (8) comprises a chamber for seeds arranged to be supplied with apositive pressure where the seed metering elementconstitutes a wall limiting the chamber and in which holes or recesses arearranged. The holes/recesses connect the chamber withthe surroundings, with the purpose of, by the pressure difference developedhereby, attaching and transporting seeds at said holes/recesses of the seed metering element. A seed metering line (812) has an inlet(814) in the chamber, with the purpose of, by saidpositive pressure in the chamber, creating an air flow for the transportationof the seeds from the chamber through the seed meteringline (812) to a drill furrow (9a).
