Authors

Abstract

To ensure accurate and consistent fertilizer application, the key component of the fertilizer feeding device, the grooved wheel, was designed and theoretically analyzed, and the number of grooves of the fertilizer wheel was determined to be 9. The effects of grooves inclination angle, grooves length and operating speed on the fertilizer feeding performance were analyzed by single-factor tests, and the appropriate range of factors was determined. The effect of the interaction between groove length and operating speed on the amount of fertilizer discharged from the groove was investigated by a full factorial test, and a quadratic regression was fitted to the test results to establish the regression equations of groove length and operating speed on the average fertilizer application per groove and the coefficient of variation of the average fertilizer application per groove, which can be used to predict the average fertilizer application per groove and the coefficient of variation of the average fertilizer application per groove to solve for groove length and operating speed.

Abstract in Chinese

为保证穴施肥的施肥量准确、一致，本研究对供肥器中的关键零部件供肥轮进行了设计和理论分析，确定了供肥轮槽数为9。通过单因素试验分别分析了槽孔倾角、槽孔长度和作业速度对供肥性能的影响，并确定了合适的因素范围。通过全因子试验研究了槽孔长度和供肥轮转速间交互影响对穴排肥量的影响，对试验结果进行二次回归拟合，建立槽孔长度和供肥轮转速对每穴平均施肥量和每穴平均施肥量变异系数的回归方程，可以使用该公式预测给定每穴平均施肥量和每穴平均施肥量变异系数求解槽孔长度和供肥轮转速。