TY - Front. Agric. China A1 - Jian XIE, Xue WU, Jianjun TANG, Jiaen ZHANG, Xin CHEN T1 - Chemical fertilizer reduction and soil fertility maintenance in rice–fish coculture system Y1 - 2010-12-05 JF - Frontiers of Agriculture in China JO - Front. Agric. China SP - 422 EP - 429 VL - IS - UR - https://academic.hep.com.cn/fag N1 - 10.1007/s11703-010-1049-z ER -