Which is less harmful to crops, plant protection drone spraying or traditional spraying technology?

Plant protection drones are less harmful.

UAV can be used for low-altitude agricultural monitoring, plant protection, and auxiliary pollination in crop seed production. Pesticide spraying is the most widely used method in plant protection. Drones with cameras can fly many times, inspect farmland, and help farmers understand the growth of grain more accurately, so as to spray pesticides more pertinently, control pests or remove weeds. Its efficiency is 100 times faster than that of manual spraying, and it can also avoid the poisoning danger of manual spraying. Moreover, the UAV rotor generates downward airflow, which disturbs the crop leaves, making the liquid medicine easier to penetrate, and can reduce the pesticide consumption by more than 20%. Jinying Plant Protection UAV can achieve the best spraying effect, the ideal flying height is less than 3m, and the flying speed is less than10m per second. A plant protection operation team consists of 6 people, 1 light truck, 1 van and 4 multi-rotor drones, which can be applied for 5 -7 days 1 10,000 mu. At present, the average price of pesticides per mu is 15 yuan. According to the preliminary test, amortize various costs, and finally realize the net profit per mu from 4 yuan to 5 yuan. 654.38+ 10,000 mu of net profit from pesticide application is 40,000-50,000 yuan. It is conservatively estimated that 654.38+05 times of "10,000 mu square" spraying are done every year, and the operation time plus transit time is 100-654.38+030 working days.