A researcher installs monitoring and prevention equipment for spodoptera frugiperda in a corn field in Danzhou, south China's Hainan Province, March 9, 2020. Spodoptera frugiperda, commonly known as fall armyworm, is an invasive alien species that causes heavy damage to crops. In order to prevent and control spodoptera frugiperda, a research institute in Danzhou enhanced the research of monitoring and prevention techniques of the species. (Xinhua/Guo Cheng)
