Data Modeling for Prescription Fertilization of Nutrient Balance and Fertilizer Recommendation

Abstract

Abstract: 【OBJECTIVE】Nutrient balance and fertilizer recommendation is a very important method of prescription fertilization. The calculation of fertilization decision depend on mass of data as inputting parameters. So the valid management of these data by database is a key technology. 【RESULTS】The author analyzed the data model of the relative data in further. Firstly, the formulas of this method was presented in brief, then these data were analyzed by entity-relationship method of the data modeling and 8 entities and 12 relationship objects were proposed based on the formulas to expression them. Finally, the entire entity-relationship diagram was presented. 【CONCLUSION】The analysis method is also propitious to the parameter management of other method of prescription fertilization.

CLC Number:

TP311.13

CaiDeli, ZhaiRuichang, HouXuekun. Data Modeling for Prescription Fertilization of Nutrient Balance and Fertilizer Recommendation[J]. Chinese Agricultural Science Bulletin, 2007, 23(6): 401-401.

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