推荐施肥中土壤肥力模糊评判方法（SFFE）系统的研究

 根据系统科学的理论，应用模糊评判的数学方法对推荐施肥中反映土壤肥力水平的多项参数进行了模糊评判研究，并在微机上建立了“SFFE”（Soil Fertility Fuzzy Evaluation System）系统。结果表明：本系统克服了现存的几种土壤肥力评价方法的局限性。利用电子计算机技术，由定性评价土壤肥力走向了定量化。而且可以比较全面和客观地评价土壤的实际肥力水平，为推荐施肥提供了科学的依据。如为土壤肥力的监测和施肥效益的客观评价提供了一种科学的数量化手段，也为检验推荐施肥的效益和土壤培肥提供科学的依据和方法。

A STUDY ON FUZZY EVALUATION APPROACH TO SOIL FERTILITY IN FERTILZER RECOMMENDATION

The purpose of fertilizer recommendation is to increase crop produciton,improve crop quality and maintain good ecological environment.Consequently,soil fertility can be regarded as a comprehensive index of examining the purpose mentioned above.In this article,we did some research work by means of fuzzy comprehensive evaluation with some parameters,according to the theory of system science,and established"SFFE"(Soil Fertility Fuzzy Evaluation)system.The results indicate that the method we have used overcomes the limitation of the soil fertility evaluation that have existed,makes a good use of modern computer technology,changes qualitative soil fertlity evaluation into quantitative one,in addition,it can more completely estimate the practical level of soil fertility,and provide a scientific quantitative approach to objectively evaluating soil fertility,and points out scitific basis and way for proving the effect of fertilizer recommendation and fertilizing soil.