1. Ministry of Agriculture Key Laboratory of Plant Nutrition and the Agri‐environment in Northwest China College of Natural Resources and Environment Northwest A&F University Yangling 712100 China
2. Taklimakan Desert Research Station Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Korla 841000 China
3. Department of Soil Science Sindh Agriculture University Tandojam 70060 Pakistan
4. Desert Control Research Institute of Shaanxi Province Yulin 719000 China