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。
2
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。
3
This paper analyses the calculation method of the agricultural mechanization on agriculture and economic growth based on the classification.