Abstract:Fertilization has become a very important strategy that adjusts the nutrient cycle connected with yield,food quality,cost,fertility,non point pollution in the Social\|Economic\|Natural complex Ecosystem(SENCE).We established the theory and technological system of Ecological Balanced Fertilization(EBF)and gave the key factors of EBF in China. EBF is a new fertilization system,which is on the theory of the nitrient cycle(General Fertilization Model,GFM).GFM is established on Mass Conversation Law.Ecological...