Agricultural machine comprising: a plurality of drilling units, each comprising: a support device a seed metering device to distribute seeds to a drill furrow in the ground across which the agricultural machine moves, wherein each drilling unit is movably connected with a structural member of the agricultural machine and the seed metering device is fixedly connected with the support device of the drilling unit, the seed metering device comprising: a seed metering element arranged in a casing, wherein the seed metering element, by means of a driving device, is arranged to transport seeds to a seed metering line, a chamber for seeds, which chamber is arranged to be supplied with a positive pressure from a pressure-creating member of the agricultural machine, wherein the seed metering element constitutes a wall limiting the chamber and has holes or recesses, which connect the chamber with the surroundings to develop a pressure difference and thereby attach and transport seeds at said holes/recesses of the seed metering element, characterized in that the seed metering line has an inlet in the chamber, wherein an air flow out of the seed metering device through the seed metering line is created by said positive pressure in the chamber for the transportation of the seeds from the chamber through the seed metering line to the drill furrow, wherein the seed metering device has a partition wall configured to prevent loose seeds in the chamber from being captured by the inlet, wherein a connection portion is provided constituting an integrated part of the casing that connects the inlet arranged in the chamber with a seed line connected to the connecting portion outside the chamber. a plurality of drilling units, each comprising: a support device a seed metering device to distribute seeds to a drill furrow in the ground across which the agricultural machine moves, a support device a seed metering device to distribute seeds to a drill furrow in the ground across which the agricultural machine moves, wherein each drilling unit is movably connected with a structural member of the agricultural machine and the seed metering device is fixedly connected with the support device of the drilling unit, the seed metering device comprising: a seed metering element arranged in a casing, wherein the seed metering element, by means of a driving device, is arranged to transport seeds to a seed metering line, a chamber for seeds, which chamber is arranged to be supplied with a positive pressure from a pressure-creating member of the agricultural machine, wherein the seed metering element constitutes a wall limiting the chamber and has holes or recesses, which connect the chamber with the surroundings to develop a pressure difference and thereby attach and transport seeds at said holes/recesses of the seed metering element, characterized in that the seed metering line has an inlet in the chamber, wherein an air flow out of the seed metering device through the seed metering line is created by said positive pressure in the chamber for the transportation of the seeds from the chamber through the seed metering line to the drill furrow, wherein the seed metering device has a partition wall configured to prevent loose seeds in the chamber from being captured by the inlet, wherein a connection portion is provided constituting an integrated part of the casing that connects the inlet arranged in the chamber with a seed line connected to the connecting portion outside the chamber. a seed metering element arranged in a casing, wherein the seed metering element, by means of a driving device, is arranged to transport seeds to a seed metering line, a chamber for seeds, which chamber is arranged to be supplied with a positive pressure from a pressure-creating member of the agricultural machine, wherein the seed metering element constitutes a wall limiting the chamber and has holes or recesses, which connect the chamber with the surroundings to develop a pressure difference and thereby attach and transport seeds at said holes/recesses of the seed metering element, characterized in that the seed metering line has an inlet in the chamber, wherein an air flow out of the seed metering device through the seed metering line is created by said positive pressure in the chamber for the transportation of the seeds from the chamber through the seed metering line to the drill furrow, wherein the seed metering device has a partition wall configured to prevent loose seeds in the chamber from being captured by the inlet, wherein a connection portion is provided constituting an integrated part of the casing that connects the inlet arranged in the chamber with a seed line connected to the connecting portion outside the chamber.