Authors

Abstract

In order to improve the adaptability of the fertilizer point-applied device to the working speed, the key components of the high-speed fertilizer point-applied device were designed and simulated by numerical calculation in this study. The effects of working speed, discharging height and discharging mass on the distribution length of fertilizer particles were analyzed by a one-factor test, and a suitable range of factors was determined. The Box-Behnken test was conducted to investigate the interaction effect of the three factors on the distribution length of fertilizer particles, and the quadratic regression was fitted to the test results to establish the regression equations of working speed, discharging height and discharging mass on the distribution length of fertilizer particles, and the optimal combinations of the parameters of working speed, discharging height and discharging mass were obtained by solving the equations. Finally, the reliability and authenticity of the simulation analysis were verified by bench test.

Abstract in Chinese

为提高穴施肥装置对作业速度的适应性，本研究对高速穴施肥装置的关键部件进行了设计和数值计算模拟。通过单因素试验分析了作业速度、排肥高度和排肥质量对肥料颗粒分布长度的影响，并确定了合适的因素范围。通过Box-Behnken试验研究了三个因素对肥料颗粒分布长度的交互影响，并对试验结果进行了二次回归拟合，建立了作业速度、排肥高度和排肥质量对肥料颗粒分布长度的回归方程，求解得到作业速度、排肥高度和排肥质量的最佳参数组合。最后通过台架试验验证了仿真分析的可靠性和真实性。