Photo taken on June 19, 2020 shows an unmanned aerial vehicle spraying pesticide above a rice field in Yingkou City, northeast China's Liaoning Province. Unmanned aerial vehicles were put into use for spraying pesticide in rice field management to enhance the efficiency in Yingkou. (Xinhua/Pan Yulong)
Unmanned aerial vehicles put into use for spraying pesticide in Yingkou, Liaoning
Source: Xinhua| 2020-06-19 21:47:32|Editor: huaxia