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- [3] Nitrate Leaching in an Irrigated Wheat-Maize Rotation Field in the North China Plain[J]. ZHANG Yu-Ming, HU Chun-Sheng, ZHANG Jia-Bao, CHEN De-Li and LI Xiao-Xin Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021 (China) Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China) Department of Resource Management and Horticulture, Institute of Land and Food Resource, the University of Melbourne, Parkville 3052, Victoria (Australia).