State Key Laboratory of Soil and Sustainable Agriculture;
Institute of Soil Science;
Chinese Academy of Sciences;
Nanjing 210008 (China);
Graduate school of the Chinese Academy of Sciences;
Beijing 100039;
Chengdu University of Technology;
Chengdu 610059 (China);
Nanjing Station of Soil and Fertilizer;
Nanjing 210036 (China);