DESIGN AND EXPERIMENTS OF A LAYERED FERTILIZER SHOVEL FOR MAIZE
玉米分层施肥铲设计与试验
DOI : https://doi.org/10.35633/inmateh-68-30
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Abstract
A layered fertilizer shovel is designed to achieve double layer fertilization in response to the current problem of large fertilizer efficiency loss in one-time strip application. The key structural parameters of the layered shovel were designed and the operating speed V, the distance L1 between the strip fertilizer discharge pipe and the burrow fertilizer discharge device and the distance L2 between the divider plate and the burrow fertilizer discharge device were identified as the main factors influencing the layered distance h. The main factors were subjected to single-factor tests and response surface analysis, and the layered distance h = 10 cm was used as the optimization target. The predicted values of layered distance h were 10 cm for the operating speed V, the distance between the strip fertilizer discharge pipe and the hole fertilizer discharge device L1, and the distance between the fertilizer distribution plate and the hole fertilizer discharge device L2, which were 2.7 km/h, 15.3 cm and 18.2 cm respectively. The simulation of the optimized combination of parameters resulted in a predicted layered distance h of 9.9 cm. The results of the field tests show that the layered distance h is 9.1 cm at an operating speed V of 2.7 km/h, with a relative error of 8.1% compared to the simulated value. The simulations accurately simulate the distribution of fertilizer particles in the real field environment. The distribution of layered distance h ranged from 8.0 to 9.5 cm at operating speeds V of 1.8 to 5.4 km/h.
Abstract in Chinese