Abstract：In this paper, a method of deciding cultivated land grades with blur red theory is suggested.And its fundamentals, characteristics, mathematical pa tter n and technical routea rediscussed . Finally its application is evaluated .
单胜道,俞劲炎. 耕地模糊综合定级体系初探[J]. 浙江大学学报（理学版）, 1999, 26(3): 99-104.
S H AN Sheng -da o, YU Jin-yan . Study on the System of Deciding Cultivated Land Grades With Blurred Theory. Journal of ZheJIang University(Science Edition), 1999, 26(3): 99-104.