Farmer applies 'helicopters' in crop pest control (3/4)
2014-10-16 10:07
Ecns.cn
Web Editor:Yao Lan
Ding Shuanghui shows unmanned aerial vehicles (UAVs) he bought for vegetable protection in his contracted farmland in Changsha, Central China's Hunan province on October 15, 2014. Ding said that the drones could help save labor and material costs by 70 percent. [Photo: China News Service/ Yang Huafeng]
