DESIGN AND EXPERIMENTS OF A LAYERED FERTILIZER SHOVEL FOR MAIZE

A layered fertilizer shovel is designed to achieve double layer fertilization in response the current problem of large efficiency loss one-time banding application. The key structural parameters were and working speed V, distance L1 between discharging pipe point-applied device L2 distribution plate determined as main factors affecting h. quadratic regression model indicators was established by single-factor test surface analysis. With h=10 cm optimization target, predicted value h 10 when are 2.7 km/h, 15.3 18.2 cm, respectively, simulation conducted verify combination obtained from solution, simulated 9.9 which a small error compared with value. field under optimal parameters, results showed that 9.1 at V relative 8.1% value, can be considered high reliability test, accurately simulate particles real environment field. When 1.8-5.4 range 8.0-9.5 meet agronomic requirements