The pest control effect of the improved electrostatic sprayer spraying was 92.1%, slightly lower than 95.0% of the conventional sprayer spraying method, but the difference was not significant, meeting the requirements of the control effect. The full-load (500 L) operation area is increased by 1.5 times, which is beneficial to reduce the number of times of dispensing in field operations and improve the operation efficiency. 7. Conclusion Electrostatic spray technology is an advanced application technology in the world. A small electrostatic spraying machine produced in the United Kingdom has been popularized in some African countries.
Spraying system for agricultural plant protection vehicle, when the water pressure is constant and the voltage is less than 8 kV, the charge/mass ratio increases with the increase Spain phone number list of voltage, and droplet size decreases with the increase of voltage. When the voltage is greater than 8 Kv, the charge mass ratio increases rapidly with the increase of voltage, then tends to be flat, and then decreases gradually. When the voltage is constant, the charge mass ratio increases with the increase of water pressure, and the droplet size decreases with the increase of water pressure. With the increase of pressure, the increase of charge mass ratio becomes gradually flat.
In this experiment, the charge voltage 8 kV is the best voltage, and the spray pressure 0.4 Mpa is the best water pressure. The results of farm experiments show that electrostatic spraying can increase the deposition of droplets in the middle and lower layers of rice and the back of leaves. The pest control effects of electrostatic sprayers and conventional sprayers are 92.1 and 95.0%, respectively, and the control effects are basically the same. The water requirement of the medicine is reduced by 60%, and the working area when fully loaded is increased by 1.5 times, which significantly improves the field work.