... farm machine,including plough, planter/seeder(wheat,corn, soybean ), tractor(20HP--150HP), combine harvester(wheat ,corn,rice,potato), straw chopper and ... up seeds suction holes.5. Sow fertilizer deeply, make sure that the fertilizer should be deeper than seeds for 40 ... depth is consistent.Main technical parameter 6 rows corn seed drill,corn planter,precision pneumatic planter,corn seeder JY-YB-6