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 Fertilizer(EF) is a optimal fertilizer compound which simultaneously satisfy multi\|target of fertilization such as higher yield,lower cost,no pollution,etc.Technological system included:1) Techniques of transforming fertilizer characters,improving soil condition,reducing fertilizer dosage,reusing unavailable nutrient,recycling nutrient;2) The experimental methods for determining Diagnostic Parameters(DP) of Ecological Balanced Fertilization Model(EBFM)and fertilizer compound;3)The quickly analysis methods of soil available nutrient;4)Estimating system and management system of fertilization.