关键词: 胶东半岛;耕地地力评价;特征分析

Abstract: In order to make better use of cultivated land resources,we must have a comprehensive understanding of the quality of cultivated land and carry out the evaluation of land productivity.Based on the data of formula fertilization in Yantai,Weihai,Qingdao City and Shandong Province,we divided 16 536 evaluation units,used the analytic hierarchy process to determine the weights of the evaluation factors,the index method to determine the comprehensive index and classified the grades.The characteristics of each grade of land productivity were analyzed from six aspects.The results showed that the proportions of the six grades to the total cultivated land in the study area were 20.62%,17.59%,14.93%,19.68%,12.43%and 14.75%.The grades of land productivity decreased from west to east.There were obvious differences among the different grades in the region.The irrigated land and vegetable land had higher land productivity,while dry land had lower productivity.The soil was generally acidic and the contents of all nutrients were adequate,but the contents of trace elements were low.In addition,the quality of high-yielding fields was good,the irrigation guarantee rate of the middle field was low,the low yield farmland had low irrigation guarantee rates and poor physical and chemical properties.This study explored the status of cultivated land and resources in Jiaodong Peninsula,which has positive significance for the sustainable use of regional cultivated land.

Key words: Jiaodong peninsula;Cultivated land productivity evaluation;Productivity characteristics