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1、Management of soil nutrients and rational fertilization,Weiming Shi State key laboratory of Soils and Sustainable Agriculture Institute of Soil Science, Chinese Academy of Sciences Nanjing 210008, China ,Contents,THE SIGNIFICANCE-Agricultural production, fertilizer application and water pollution in
2、 China HOW WE DID-Network of soil fertility assessment and experimental stations for long-term fertilizer effects CASE STUDY-Optimal management of fertilizer application in rice production for higher efficiency and better environmental quality Conclusions,Example of “fertilizing to death”,Secondary salinization by too much fertilizer applied,Annual chemical fertilizer use and total grain production in China,Consumption of fertilizers in China in the last decades,Nitrogen Input from Fertilization in Different Time,
