The changes will epitomize in the following aspects: The primary industry will release massive extra labor force; the enterprises with international competitiveness in the secondary industry will take in some labor force, while the sunseting industry will effect a radical reduction in number of persons; the territory industry will generally exhibit powerful developing potential and .

?Through the staple analysis of knowledge economy in primary industry about Nantong by usingfactor analysis,reaches the compositions of knowledge economy in primary industry which now play an mainpart,overcomes the defects of qualitative analysis,so the decision－maker can micro－control the primary indus－try of Nantong under the miro－control of state.

Primary industry is the fundamental industry,and has economic competitions in its internal composition.

Development issues and countermeasures of first industry in Wenjiang district of Chengdu city;

Mathematical model and strategy analysis for Adjustment of the internal structure of the first industry in Jiangsu province;

Therefore,the linear programming model to adjust the internal structure of the first industry in China is developed.

This paper analyses the long-run equilibrium and the short-long fluctuation among capital construction in agriculture and gross product of primary industry and net income per peasant over the period 1981-2005 in China by cointegration theory and VECM,and empirically studies the causal relationship between those variables through Grange Causality Test.