1. Chinese Academy of Tropical Agricultural Science, Environment and Plant Protection Institute, Haikou, Hainan 571101 China
2. Former Research Chair, Nova Scotia Agricultural College, Department of Plant and Animal Sciences. Truro, Nova Scotia, B2N 5E3 Canada
3. Danzhou Scientific Observation and Agro‐Environmental Experimental Station, Chinese Ministry of Agriculture, Danzhou 571737 China
4. Ministry of Environment, Parks and Sustainable Development of Quebec, Sustainable Development Services, Quebec City, Quebec, G1R 5V7 Canada
5. Former Visiting Professor, Nova Scotia Agricultural College. Permanent address: Guangzhou University, Department of Physics. Guangzhou, Guangdong 510006 China
6. China Agricultural University, Department of Soil and Water Sciences, Beijing 100094, China