本文阐述了MWS系统。系统软件应用dBASEⅢ语言,以中文菜单人机对话形式编写而成。系统设计采用模块复盖技术,共分为五个功能模块:（1）数据维护;（2）代码查询,（3）组合检索;（4）单项检索;（5）用户初始化等。整个系统共由20余个程序组成。该系统具有较强的检索功能,可迅速查找所需要的文献题录,比常规人工检索提高效率50～100倍。在此基础上,可以按我省各主要造林树种逐一建立起专题数据库,并形成主要造林树种文献检索系统。 This article describes the MWS system. System software application dBASE Ⅲ language, written in Chinese menu man-machine dialogue form. System design using module covering technology, is divided into five functional modules: (1) data maintenance; (2) code queries, (3) combination of retrieval; (4) single retrieval; (5) user initialization and so on. The entire system consists of more than 20 programs. The system has a strong search function, you can quickly find the required bibliography, compared to conventional manual retrieval to improve efficiency of 50 to 100 times. On this basis, thematic databases can be established one by one according to the major afforestation species in our province, and a document retrieval system for main afforestation species can be formed.