Optimal Design and Experiment of Critical Components of Hand-Pushing Corn Plot Precision Planter

The mechanized sowing operation of corn breeding can improve test accuracy and efficiency speed up the process. In view problems low flexibility, high price, poor quality current seeder in experiments, critical components a hand-pushing plot precision planter were optimized. Through analysis relative motion between seed hole seed-metering wheel, diameter range depth wheel determined as 13~19 mm 6~12 mm, respectively. chamber structure was optimized to filling performance under condition small number seeds. angle connecting plate horizontal line (ACP) back (ABP) 35~55° 40~70°, EDEM used simulate seeding circumstances with different holes sizes. optimal combination seeds’ sizes appropriate ACP ABP obtained through orthogonal test. results simulation experiment showed that diameter–depth combinations small, medium, large seeds 13–8, 15–10, 17–8 were, respectively, 45°and 70°. soil bin carried out further verify actual effect influence rotating on seeding. when less than 16.0 r/min, qualified rates double higher 90% 85%, missing 0%. variation coefficients plant spacing 5%, indicating good stability spacing, which met design requirements. study provide theoretical reference for optimization maize equipment plot.