Operators use drones to spray pesticides and nutrient solution on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators use drones to spray pesticides and nutrient solution on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators add nutrient solution which will carried by drones to spray on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators use drones to spray pesticides and nutrient solution on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators use drones to spray pesticides and nutrient solution on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators add nutrient solution which will carried by drones to spray on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators use drones to spray pesticides and nutrient solution on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.
Operators use drones to spray pesticides and nutrient solution on winter wheat on March 21, 2018 in Cangzhou, Hebei Province of China.