Agricultural sowing machine with at least one separating device (4), which is arranged in a housing (5), wherein the housing (5) has at least one with an air conveying line (9) connected to the air opening (8), which for supplying and / or discharging Air is provided by means of a blower in and / or from the interior of the housing (5), whereby in the interior of the housing (5) by means of the blower, a positive and / or negative pressure can be generated. In order to provide a separating device (4) which prevents the penetration of seed into the air delivery line (9) and is insensitive to contamination and / or blockage in the region of the air opening (8) and / or air delivery line (9), the air opening is provided (8) is covered by a cover member (10).
