7Dong X. Public Investment, ,Social Services and Productivity of Chinese Household Farms [J]. Journal of Development Studies, 2000,36(3) : 100-122.
8Peng D, T Kawaguchi. The Demand for Chemical Fertilizers in China[J]. The Journal of the Faculty of Agriculture,Kyushu U- niversity, Japan, 2001,45 (2) : 651 -666.
9David Stifel, Jean-Claude Randrianarisoa. Agricultural policy in Madagascar: A seasonal muti-nlarket model[J]. Journal of Policy Modeling, 2006, (9) : 1 023- 1 027.
10John Kerr. Price policy, irreversible investment and the scale of agricultural mechanization in Egypt[J]. Middle East Economics, 2003, (5) : 161-185.
