Developing a WebGIS Fertilizer Decision Support System in Black Soil Zone of Northeast China-A Case Study of Shuangcheng County in Heilongjiang Province
1.Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin,Heilongjiang 150081, China;2.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China;3.Shanghai Integrated Circuit Research and Development Center,Shanghai 201203,China;4.Northeast Forestry University,Harbin,Heilongjiang 150040,China;5.Agriculture and Agri-Food Canada,Greenhouse Processing and Crop Research Centre,Ontario N0R 1G0,Canada
Abstract:
A Fertilizer Decision Support System was developed based on the long term maize field experiments in Shuangcheng County located in black soil region, Northeast China. In the study, 500 soil samples in the0-20cm layer were collected from the cor nfield in all the Shuangcheng County and the support scheme of the system was established by the long-term experiment in the field and fertilization model. The geostatistics and Kriging methods were used in the study in order to analyze the spatial heterogeneity of soil nutrients and make the map of fertilization management unit. The Java Script Language was used to develop the Fertilizer Decision Support System on ArcGIS Servers. Using this system, agronomists and decision makers can obtain information on the spatial variability of soil fertility and make decision on strategic management on soil fertil-ity. In addition, far mers can access the system to obtain their fertilizer recommendations easily. This research provides a useful tool to promote the application of agricultural information through WebGIS, to increase farmer's profit, and to improve sustainable agriculture and environment protection.
