Advance water and pesticides were stored in tanks and medicine cabinet. In the diaphragm and the role of drug pumps, water and pesticide mixing in the pipeline, after filtering through the appropriate filter solenoid Propane Control Valve and spray nozzle. Pesticide flow by the flow control Propane Gas Heater Control Valvefor precise measurement and control, water flow through the flow sensor. Water flow and pesticide flow can be obtained through precise control of liquid concentration required. To prevent mixed liquid back to the kits, the flow control Propane Control Valve in the discharge line check Propane Control Valve is provided. Relief Propane Control Valve and pressure relief Propane Control Valve are used to restrict online Mixing Apparatus spray bar pressure and liquid pipeline operating pressure. Differential pressure sensor for flow control Propane Control Valve pressure drop testing. Each high-speed switching solenoid Propane Control Valve controller output by multiple signals are controlled independently adjustable. When the solenoid Propane Control Valve is open, liquid from the spray nozzle through an electromagnetic Gas Control Valves; solenoid Propane Control Valve is closed to stop spraying. Also set four spraying flow sensors, in order to achieve real-time monitoring of each sub-region lance actual spraying flow. Test system uses RS-360SH gear pump for change, and thus in the same physical characteristics of the fluid flow can be expressed as a relational expression liquid injection pump, flow of 0.01m3 / h. Pump diaphragm using PLD-1201 type, operating voltage of DC 12V.