Authors

Abstract

Deep-fertilization mechanism is a key part of deep-fertilization liquid fertilizer applicator. To obtain a good-performance deep-fertilization mechanism, this study developed a deep-fertilization mechanism with deformed gears and designed a deformed gear fertilization test bench. Single-factor and central composite design tests were performed with the planet carrier, spray hole size and pump pressure as the test factors, and the fertilizer amount as the test index. The results of the single-factor test showed a linear functional relationship between fertilizer amount and pump pressure, an exponential functional relationship between planet carrier velocity and fertilizer amount, and an exponential relationship between spray hole size and fertilizer amount. The rotating and perpendicular test data were analyzed and optimized using Design-Expert 8.0.5 software. The result of the optimization is: 10.5ml of fertilizer amount with pump pressure 0.36MPa, planet carrier velocity 82 r/min, and spray hole size 2 mm. The test result can meet the agronomic requirements.

Abstract in Chinese

深施机构是深施型液态施肥机的关键部件，为得到具有较好施肥性能的深施机构，设计了变形齿轮式深施机构，研制了变形齿轮施肥试验台。采用单因素和正交旋转试验方案，以行星架转速、喷孔直径和泵的压力为试验因素，以施肥量为试验指标。单因素试验结果表明，施肥量与液泵压力呈线性函数关系，行星架转速与施肥量呈指数函数关系，喷孔直径与施肥量呈指数关系。运用Design-Expert 8.0.5软件对正交旋转试验数据进行分析和优化。最优结果：液泵压力0.36Mpa，行星架转速82r/min，喷孔直径为2mm时，施肥量10.5ml。试验结果满足农艺要求。