1. An agricultural machine (1) containing a seed metering device (8) for metering seeds (91) for distribution into the soil on which the agricultural machine is moving, while the seed metering device (8) comprises a wall (803a, 903a), which is made with the possibility of rotation, and the seed metering device is arranged to communicate with the means (500, 501, 502, 503, 504, 505, 507, 5030, 5031) of applying pressure to provide a pressure difference on the walls between the seed receiving side, the high pressure side of the wall (803a, 903a) and a low wall pressure side that is opposite the seed receiving side, wherein the wall is provided with a plurality of through holding holes (804, 904) for receiving on the seed receiving side of the wall (803a, 903a) by the pressure difference on the seed walls (91) in the holding holes (804, 904) for subsequent movement by rotation of the wall (803a, 903a) by the distance of movement of the wall and release of seeds (91), and the means for applying pressure includes a pneumatic device (501) connected to the air water (502) and providing the main air stream through the air duct (502) in the direction of the seed-receiving side of the wall (803a, 903a), characterized in that the return pipe (505) is connected between the side of the wall (803a, 903a), which is opposite to the receiving seed side, and a pneumatic device (501), wherein in the return pipe a part of the main air stream is transferred back to the inlet side of the pneumatic device (501), and a part of the main air stream is directed downward into the soil through the exhaust pipe1. Сельскохозяйственная машина (1), содержащая дозирующее семена устройство (8) для дозирования семян (91) для распределения в почву, по которой движется сельскохозяйственная машина, при этом дозирующее семена устройство (8) содержит стенку (803а, 903а), которая выполнена с возможностью вращения, причем дозирующее семена устройство выполнено с возможностью сообщения со средством (500, 501,
