Line spacing adjusting device for seeding machine

The utility model belongs to the technical field of seeding machine row spacing adjusting equipment, and discloses a row spacing adjusting device for a seeding machine, which comprises a seeding box, a support frame is arranged on one side of the seeding box, a mounting block is fixed on the surface of one side of the seeding box, an empty groove is arranged on the lower surface of the mounting block, and the empty groove is communicated with the support frame. The seeding box comprises a mounting block, an empty groove is formed in one side of the mounting block, an open groove is formed in the surface of one side of the mounting block, an embedded block is arranged in the empty groove, a connecting rod is connected to the surface of one side of the embedded block, and a moving assembly is connected to one end of the connecting rod, the seeding box is provided with the mounting block, the embedded block, the empty groove and the like, and the embedded block can be fixed in the empty groove through the mounti