Program Design of Gray Correlation Analysis Based on the VB and Its Agriculture Usage

摘要

Gray correlation analysis is an analysis method of gray system theory, it could find out correlativity of research factors and some main factors by data processing among random factors order, it had some characteristics as theory simplicity, calculation expediency and so on. According to its mathematical theory and the character of VB, the paper designed VB program of gray correlation analysis, and it was applied to analyze the effect of soil property (soil organic matter, moisture water content, total-N, available N, available P, available K, bulk density, electrical conductivity and PH) on field yield. The influence extent result is: available K > available N > available P > moisture water content > PH > soil organic matter > bulk density > electrical conductivity = total-N, and according to this conclusion we can manage agriculture production concretely. The study showed that the program makes gray correlation analysis deal with field information more conveniently. The program will be beneficial to deal with variety field information and serve for precision management of agriculture production.