The subject serial research of data base of water saving agriculture literature;

Discussion on the professional journal literature resources of library;

By means of searches on the web, the network status of one hundred and eight professional periodicals in biology is investigated and studied.

To counter the current situation of the specialized periodicals in libraries,the paper has analyzed the constraints for development and utilization of specialized periodical information resources,and put forward opinions on means to develop and utilize the formation resources of specialized periodicals and run a better service for the specialized periodicals.

This paper collects the periodical special issue published in the May 4th movement with the modern communication research view,reviews the information flow of the communication and points out the important effect such as spreading the current western politics,promoting the transformation of Chinese political culture,investigating the society and developing new educational mode.

This paper discusses the significance of spread and utilization of advertisement information on specialized periodical, analyzes factors of influence spread and utilization effect, puts forward countermeasures for purpose of giving full play to information, educational and cultural function of advertisement information on periodical.