3WY-A3型喷雾机变量喷雾实时混药控制试验

Experiment on variable rate spray with real-time mixing pesticide of 3WY-A3 sprayer

摘要: 为依据作物对药液的实际需求进行变量喷施，达到节约农药和保护环境的目的，该文针对3WY-A3手推式喷雾机，设计了一种实时混药式变量喷雾系统。该系统主要包括混药装置、差压流量计、流量控制阀和控制系统硬件及软件等。通过实时混药控制试验，结果表明，药流量的控制范围为0.1～0.9 mL/s，误差在±5%左右。该研究可为实时混药变浓度喷雾机的设计提供参考。

Abstract: It is of great significance to proceed variable rate spray (VRS) according to the requirement of crops for saving pesticide and protecting environment. A hand-push sprayer of type 3WY-A3 was tested with the VRS system on real-time mixing pesticide. The VRS system includes a mixing pesticide device, a differential pressure (DP) flow meter, a flow control valve and control hardware and software. The experimental results showed that the pesticide flow range was from 0.1 to 0.9 mL/s with control accuracy of ±5%.