Research and Analysis on the Knowledge Navigation Structure of the Academic Library from the Angle of the Knowledge Value Chain;

Research and Realization of E-Government Knowledge Navigation System Based on XTM;

The Research and Implementation of the Knowledge Navigation Based on XML Topic Map;

HNC agricultural terms included 31,413 words in agriculture field;agricultural words are semantically described from the word form,the concept of categories,HNC symbols,their semantic categories,related semantic category,synonymous name six fields.

It also expounded the necessity of developing chinese knowledge agriculture,analysed its disadvanteges,and put forward the appropriate strategies.

Clearly mentioned the new concept of “knowledge agriculture”,explained the character and intentsion of “knowledge agriculture”,summaried the various kinds of “knowledge agreculture”,which are running toward us in the world presently,discussed about the new situation of recent “knowledge agriculture”and several policies could be taken toward it on our own initiative.

At last the model is applied to knowledge agriculture for scientific decision.

On the development of knowledge-based agriculture in foreign contries and its enlightenment to China;

Knowledge-based agriculture is becoming the trend of strengthening the base of national economy.

Recent statistics show that there are some obstacles for the sustainable development,therefore developing knowledge-based agriculture according to the requirement of the population,resource and economic development.