the National Natural Science Foundation of China(Nos.30670393 and 30630015);the Knowledge Innovation Program of the Chinese Academy of Sciences(No.KSCX2-SW-133);the Science and Technology Planning of Guangdong Province(No.2006A36703004);the Natural Science Foundation of Guangdong Province(No.5006760)
The process of organic materials increasing soil pH has not yet been fully understood. This study examined the role of cations and organic anions in regulating soil pH using organic compounds. Calcareous soil, acid so...