Agrional Trailed Mechanical Seed Drill. pulled by tractor, sows the land with grains and similar seeds together with fertilizer at the same row with required quantity and depth continuously. The combined seed drill can be used with any type of tractor and in all conditions of soil. Seed drills which are manufactured with 16,18,20,22,24,26,28 sowing units have automatic system for adjusting the motion gear system and sowing units mechanically for sowing position and transportation position.