A distributor device of fertilizer substances for a seeder machine comprises storing means (20) of a fertilizer substance, a plurality of distribution conduits (60) connected to the storing means (20), at least a source of high-velocity air (30) connected to the distribution conduits (60) for distributing, in use, the fertilizer substance. The device further comprises: at least a connecting element (70), comprising at least two infeeds (72) and at least one outfeed (76), the connecting element (70) being connected to at least two of the distribution conduits (60) so as to convey, in use, the fertilizer substance coming from at least the two distribution conduits (60) to the at least an outfeed (76).
