The text adopts multivariate statistical principal component analysis to evaluate on soil fertility’s rank taking example for 17 soil fertility’s factors of 11 counties(cities) in Sanming Fujian tobacco areas。Soil fertility factor’s former 4 principal components which >1 and % of variance are 46.528%,20.422%,10.631%,8.164% and cumulative % is 85.745% is enough to reflect original factor’s information. 4 principal components are respectively generalized (1) soil P、soil exchangeable Ca and soil microelement ;(2)soil texture and soil Mg;(3)soil organic matter;(4)soil acidity and alkalinity。It comes out varimax rotation’s principal component score in virtue of SPSS statistical software and integrated score is calculated。The results indicate that Datian county’s soil fertility ranks first and its soil integrate fertility is the highest of all。
