【摘要】 遵照分类检索“以类索文，触类全貌，类目编排，严谨科学”的基本原则及本数据库独具专题综合性的特殊要求，以中国图管分类法为基础，优选有关１～４级类目、类号，显明简要的类目注释．并制定一套划分文献的规则，依类揭示本库所收录的节水农业文献信息，满足有关用户以类索文的需要。更多还原

【Abstract】 According to the basic principle of calling information scanning, and arrangingby its classification seriously and scientifically, the special requirement of summarizedinformation on water saving agriculture and the Chinese Library Classification, the grade 1-4classification content and number of the literature were optimally collected with simple and clearnotes. And setting up the classification rules of the database the author classified, index antipresented the information of water saving Agriculture in order to meet the need of reader’s use byclassification.更多还原