Pest control workers operate an unmanned aerial vehicle (UAV) over a wheat field in Weinan, Shaanxi province on Feb. 26, 2017.

Carrying about 7 kilograms of pesticide, a single UAV can finish pest control work across 50 mu (1 mu is equal to 667 square meters) of land in just one hour.

Farmers can summon UAVs to their fields with the push of a button on Alipay, a popular online payment service, using their smartphones. As an example of Internet Plus, the service helps to promote agricultural modernization.