The implementation of agricultural land classification, gradation and valuation metadata system.
农用地分等定级估价元数据体系的实现。
This paper introduces the classification of agricultural information resources free of charge, search methods and free database of domestic and foreign.
介绍了免费农业信息资源的分类、检索方法以及国内外重要的免费数据库。
This paper analyses the calculation method of the agricultural mechanization on agriculture and economic growth based on the classification.
就农业机械化对农业和经济增长贡献率测算方法按照分类进行了评析。
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