Research on the Subarea Management Model of Soil Nutrients by GIS
Bai You · Zhongguo nongye Kexue · 2001
On the platform of ArcInfo,the management model of soil nutrients can be built by grid sampling,nutrients analysis and fertilizer recommendation.The model's foundation is soil special variability,its method is geostatistics and its goal is managing the soil nutrients in subareas.This model is not only based on the soil special variability but also the facts of separate management in Chinese county.It can supply the fertilizer recommendation in small plots,it can also supply the proposals in soil nutrients management in large scale.In Malan experiment area in Hebei Province,it can draw the nutrient distribution maps,classification maps and nutrient management maps by this model.It also can supply the table of fertilizer recommendation plot by plot.Using this method to manage the soil nutrients,it can avoid the errors because of the soil special variability in fertilizer recommendation and can attend the subareas that the nutrients is deficiency.