... machine parts. Specification of JY-YB-61. Pneumatic planter/corn drill,multi-purpose,for corn,soybean,cotton,and other large grained ... case of making empty hole and affecting the single seed rate.3. Seed suction-disc with 16 holes can realize different plant ... planting depth is consistent.Main technical parameter 6 rows corn seed drill,corn planter,precision pneumatic planter,corn seeder JY-YB-6 ...