The benefit of cultivated land use is an important measure of land productivity and sustainable agriculture development.By taking He'nan Province as the study area

19indicators were selected to build an evaluation index system of cultivated land use efficiency from the three aspects of economy

society and ecology.Entropy method was used to determine indicator weight;comprehensive multi-factor evaluation method

to evaluate the standards of cultivated land use efficiency from 1990to 2009;and the coordination degree model

to judge the mutual coordination degree for various subsystems affecting the cultivated land use efficiency.Results show that overall

the cultivated land use efficiency in He'nan Province presented an upward trend from 1990to 2009.The coordination degree of cultivated land use system was in an unstably fluctuated status in the 20years

from very uncoordinated status to basic coordination on a whole.To achieve a reasonable use of cultivated land resources in He'nan Province

we should exploit cultivated land use potentials

enhance land remediation and environmental protection

promote agricultural restructuring

develop agricultural science and technology

increase efforts to the concessions and support for agriculture

and control population growth.