This paper aimed to study the change in MDA content and antioxidant enzyme activity of roots in wintering period under single sowing of alfalfa and mixed sowing
To find out graduates’ repayment awareness of student loan,we conducted a questionnaire survey for those graduates who applied for student loan in Zhongkai Uni
Using the DEA analysis method,on the basis of the national panel data from 2002 to 2014,this paper made a comparative analysis on the rice production performanc