农业科技期刊关键词标引的现状、问题及对策

农业科技期刊论文的关键词是检索文献的入口之一。要想充分发挥检索系统的功能，提高检索效率，必须正确选用关键词。关键词标引不当则会影响检索系统的功能，增加读者壹找文献的漏检率，降低检全率。本文通过对《作物学报》与《植物营养与肥料学报》两种专业期刊文献中的标引词、标引深度、通用词的使用、标引先组度、一致性等方面的统计分析，对期刊论文标引关键词经常出现的问题，诸如揭示主题不深、主题信息遗漏、通用词偏多、标引深度不当、逻辑关系混乱、标引信息冗余等进行剖析，并提出了解决这些问题的建议。

Current Situation, Problems and Countermeasures of Agricultural Periodicals' Subject Indexing

Subject index of agricultural periodicals is one of the portals in searching literature. In order to make full use of the functions of search systems, it is essential to improve searching efficiency and correctly choosing keywords. Correct choosing keywords can influence the functions of search system, increase the recall of hit literature, and reduce recall rate. In this paper, through collecting and analyzing statistics of subject index, index profundity and current terms in Acta Agronomica Sinca, Plant Nutrition and Fertilizer Transaction, the paper has anatomized the common problems that usually take place, such as less of the theme depth, loss of subject matter, excess of the current terms, lack of appropriative words, inappropriateness of subject index depth, confusion of the logic relations, un-clarity of part of speeches and redundancy of information, and put forward suggestions to solve these problems in indexing.