3Chen, Aimin. 2002. Urbanization and Disparities in China: Challenges of Growth and Development [ J ]. China Economic Review, ( 13 ) :407-411.
4Enikolopov R. , Zhuravskaya E.. 2007. Decentralization and Political Institutions [ J ]. Journal of Public Economics ,91 (2) :2261-2290.
5Fan, S. and Pardy, P. G. 1997. Research, Productivity and Output Growth in Chinese Agriculture [ J ]. Journal of Devel- opment Economics ,53 ( 1 ) : 115 -137.
6Griliches,Zvi. 1963. The Source of Measured Productivity Growth: United States Agriculture, 1940-1960 [ J ]. Journal of Political Economy, 71 ( 7 ) : 122- 134.
7Lin,J. Y. 1997. Institutional Reforms and Dynamics of Agricultural Growth in China [ J]. Food Policy,22 (3) :201- 212.
8Yang, Demis Tao. 1999. Urban-Biased Policies and Rising Income Inequality in China[ J ]. American Economic Review Papers And Proceedings, ( 5 ) :306-310.
