[CJ-06-13]Rational Fertilization and Reduction of Large-scale Farmland Pollution by Rationalized fertilizer Usage

Author：　　Periodical： 　　Source：

Author：He, haoran, Qiang Li and Linxiu Zhang　　Periodical：Journal of Agrotechnical Economics, No. 6, 2006, pp: 20-10.　　Source： ccap