6Huang,Jikun,M.Reegrant and S.Rozelle,Public Investment,Technological Change and Reform:A Comprehensive Accounting of Chinese Agricultural Growth in China,Working Paper,Stanford,1995.
7Lin,Just,Hybrid Rice Innovation in China:A Study of Market Demand Induced Technological Innovation in a Centrally Planned Economy,Review of Economics and Statistics,74(1992):14 ~20.
8Widawsky,David,Scott Rozelle,Songqin Jin,and Jikun Huang.Pesticide Productivity,Host-Plant Resistance and Productivity in China.Agricultural Economics,19 (1998):203 ~ 217.