The flow rate measurement of seeding and fertilization is the premise for precise control; it's difficult to measure accurately due to the particles flow in a continuous dense state. A flow rate measuring method based on the correlation between the sensor voltage and particles flow rate was introduced. Two algorithms for models building were proposed. To demonstrate the feasibility of this method and evaluate the accuracy of the algorithms, a particles flow rate sensor and test bench were designed. Wheat, rice, compound fertilizer, and urea were chosen as the experimental subject. The result showed that it has a strong correlation between the voltage and flow rate. The R² fitted by accumulation method (AM) for the four materials were 0.9998, 0.9984, 0.9999, and 0.9998, and the R² of sorting method (SM) were 0.9934, 0.9843, 0.9903, and 0.9928. The statistics showed the measurement accuracy of AM was higher than that of SM.

播种施肥流量测量是精确控制的前提；由于颗粒在连续致密状态下流动，因此很难准确测量。介绍了一种基于传感器电压与颗粒流量相关性的流量测量方法。提出了两种模型构建算法。为了证明该方法的可行性并评估算法的准确性，设计了颗粒流量传感器和测试台。选择小麦、水稻、复合肥和尿素作为试验对象。结果表明，电压和流量之间有很强的相关性。四种材料通过累积法 (AM) 拟合的R ²分别为 0.9998、0.9984、0.9999 和 0.9998，R²分选法（SM）分别为 0.9934、0.9843、0.9903 和 0.9928。统计表明，AM的测量精度高于SM。