Based on the achievements of cultivated land quality grades,using the theory and method of agriculturalland capacity calculation,we accounted the theoretical productivity,feasible productivity,and real productivity ofagricultural Land in Huixian City. According to the characteristics of grain production of Huixian City,we calculatedand evaluated the use potentiality of agricultural land. The results showed as follows. 1)The theoretical yield ofHuixian City was 28 972 kg/hm2,and there was little difference a...