土壤肥力计算机辅助制图初探

Soil Fertilize Mapping by Spatial Interpolation

土壤肥力图是评价农田土壤肥力水平、合理地制定土壤肥力分区及施肥方案的一个关键要素。传统土壤肥力制图以人工绘制为主,但其效率低,工作量大。通过对广东省烟区植烟土壤肥力自动制图的实践,把GIS作为分析和制图工具,通过空间插值方法和GIS强大的分析处理数据能力及制图功能,制作土壤肥力图,归纳出土壤肥力自动制图的一般方法,讨论了其关键技术问题。

Soil nutrients map is a key issue to evaluate the soil fertility of field and plan fertilization regions. In tradition, soil nutrients map was made manually in the cartography procedures with low efficiency and heavy workload. It% a practice to automatic cartography in tobacco fields of Guangdong province using the GIS tools; spatial interpolation and powerful analysis of GIS data and mapping functions were involved. General approach for automatically cartography was put forward, and some key techniques were discussed.