This paper reviews the theory of endogenous technology progress and further develops the theory of north-south trade and product cycle proposed by Grossman and Helpman based on the model of Li(2001)、Dinopoulos and Segerstrom(2003).

Therefore,based on the establishment of a endogenous agricultural technology progress within the dual economic growth model can be used to explain the history of economic growth in the agricultural process,evaluate the performance of the agricultural policy and efficiency.

Progress of ecological techniques being the source of sustainable high yield of crops——The inspiration from the high yield fields of wheat in Xiangride area of Qinghai Province after re-visiting;

Research on the effects of technology improvement of agricultural agglomeration development

After more than 20 years of practice in our Chemical Fertilizer Plant,it's been proved that an enterprise must continuously perform technology improvement and technology innovation,strengthen management and treat several relations well in order to survive and develop.

Based on the practice condition in xiangxiang Aluminium Works, this paper introduced the technology improvement and lower Power consumption, such as electralyte addition agent, reconstruction of anode and cathode, microcomputer central and improved roast start method.

Practices of underground mining technology progress in Kailuan Mining Area;

Appraises of innovation degree of technology progress in manufacture enterprises;

Empirical analysis on relation of road freight maket structure with technology progress;