【正文】
tention on core business, reduces the cost by scale effect, enhances the antirisk strength, and helps to achieve quick response to market demand by information the same time, contract0riented 3PLs enterprises unify the interests of all subjects in supply chain of agricultural products, emphasize the strategic partnership of both parties,and alleviate market petition of related industries in agricultural markets. Subjects in both downstream and upstream of the supply chain share information and establish longterm partnership with 3PLs enterprises as the core. 2 Construction of the work management information system of agricultural supply chain based on 3PLs Construction of structural system 3PLs platform is used to offer work munications and system services to the subjects in agricultural supply chain. Fig. 1 illustrates the structural system of work management information system of agricultural supply chain based on 3PLs. Structural system of work management information system of agricultural supply chain based on 3PLs Construction of Network Management Information System of Agricultural Products Supply Chain Based on 3PLs 4 Fig. 1 illustrates that the basic hardware of the system is bined by the work transmission media and work equipment, that is the work munication layer. Hardware facilities, corresponding system software, operation system and manager software together constitute the software and hardware environment layer. This layer provides necessary software and hardware facilities for 3PLs enterprises during the data storage and management of agricultural products. Database layer is responsible for the management of data source in agricultural information resources and work systems, and offers data integration to the application layer. 3PLs standard system includes the overall standard, work infrastructure standard, application support standard, application standard, information security standard, and management standard. Safety system of 3PLs includes the security management, security infrastructure, and security service. This system is posed of 7 function modules, such as the centralized control module, transportation process management module, material and vehicle scheduling module, customer relationship module, storage management module, customer query module, and financial management module(Fig. 2),the function of which is to ensure the information fluency and system security of 3PLs enterprises during the operation and integration of resources. These modules have improved the service module of different nodes in agricultural supply chain and have reduced the operation risk of system, so that the system bees more structured, perfect, and rational. Framework of management system Based on the existing research result, the business and module of modern logistics management, and the management information systems, reports the management system of internal and external integrated agricultural enterprises according to the circulation of agricultural products from the manufacturer, supplier, and retail terminal to the consumer. Fig. 2 Function modules of 3PLs work management information system Construction of Network Management Information System of Agricultural Products Supply Chain Based on 3PLs 5 The management system of internal and external integrated agricultural enterprises shows the framework of work management information system of agricultural supply chain based on 3PLs. The whole system, running under an open 3PLs, is formed by four layers of work munication layer, software and hardware environment layer, database layer and application layer. In the application layer, 3PLs, as the core of management information system of agricultural supply chain, plays the role of information processing center. It mainly manages the plan, inventory, and other subsystems, supervises subsystem through supplier relationship, conducts information interaction with procurement management subsystem and the supplier, and carries out information interaction with the supplier, producer and consumer through customer relationship management subsystem and sales management