Aerial photo taken on Feb. 26, 2020 shows farmers laying plastic mulch in the field in Dianguang Village of Pengzhou, southwest China's Sichuan Province. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Luo Guoyang/Xinhua)

Villagers plough a field in Chishui Village, Hengyang County of central China's Hunan Province, Feb. 26, 2020. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Cao Zhengping/Xinhua)

Aerial photo taken on Feb. 26, 2020 shows agricultural machinery working in the fields of Anzishan Village of Hushan Township in Rongcheng City, east China's Shandong Province. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Li Xinjun/Xinhua)

Aerial photo taken on Feb. 26, 2020 shows farmers laying plastic mulch on a vegetable field in Guitou Village of Daoxian County in Yongzhou, central China's Hunan Province. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by He Hongfu/Xinhua)

Aerial photo taken on Feb. 26, 2020 shows a farmer working in the field in Banji Village of Fengshan County in Hechi, south China's Guangxi Zhuang Autonomous Region. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Zhou Enge/Xinhua)

Aerial photo taken on Feb. 25, 2020 shows farmers working in the fields of Laoju Village of Taihe County in Ji'an, east China's Jiangxi Province. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Deng Heping/Xinhua)

Aerial photo taken on Feb. 26, 2020 shows agricultural machinery ploughing the land in Rongjiang County, southwest China's Guizhou Province. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Wang Bingzhen/Xinhua)

Aerial photo taken on Feb. 26, 2020 shows a farmer driving a self-propelled sprayer on a farm in Xintun Village of Tancheng County in Linyi City, east China's Shandong Province. Spring ploughing is underway in many areas of China amid the fight against the novel coronavirus disease (COVID-19). (Photo by Zhang Chunlei/Xinhua)