The Development Of Decision Support System For Rice Fertilization Of Nanfeng County

This paper analyzed the current domestic and international fertilizer technology research situation and the application of fertilizer decision system development, according to the needs of user and NanFeng county’s conditions, combining fertilizer technology standards and requirements, proposed the overall design scheme of county fertilization decision support system which is based on ArcGIS Engine; combinomg with jiangxi fertilizer station recommend "Abundance and deficiency index method" established fertilization decision support processes the data model. Use open source database software PostgreSQL established the system foundation database and the spatial database, integrated GIS function and fertilizer model into the system and finally realized the rice fertilizition decision support system for the study area. This research mainly did the following work:(1) Researched the technical route and method of prescription based on soil nutrient and crop production and environmental impact factors target of the information such as variable fertilization.(2) Based on the studying of exist fertilization decision system, thoroughly studied fertilization of the generation of logical process prescription, combined with the department of agriculture for many years of experience summary fertilization model, a software development commonly used the object-oriented method write fertilization model, and the GIS spatial data will be operating functions is blended in among them, realized the operation is simple, practical rice fertilization decision support system.(3) Use open source database PostgreSQL, established NanFeng county rice fertilization decision spatial database, this paper discusses the relationship between relationship database and spatial database, and the relationship of the company with ESRI ArcSDE spatial data engine operating spacial data stored in the relational database data, intuitively show space position information and attributes information, has the important meaning for rice fertilization and production.(4) System analysis and design. Based on the situation of NanFeng county rice fertilizer at present and the actual situation, from the Angle of user of rice fertilization decision support system finished the requirement analysisr; Completed the function design of NanFeng county rice fertilization decision support system, database framework design, including spacial database and attribute database, user interface design, etc.(5) From the point of software engineering, according to the software development project steps, after the requirement analysis, system design and coding,I accomplished the goal of this study: The Development of Decision Support System for Rice Fertilization of Nanfeng County.(6) System is mainly based on the support of NanFeng county rice fertilizition, realize the NanFeng county rice spatial data visualization, realize the figure check properties and property check diagram and the cultivated land fertility level and soil nutrient status display. On the basis of NanFeng county rice realized the generation of fertilization prescription, not only to single plot the including generating fertilization prescription, still can for a farmer’s all plots or the whole of the village’s all land mass production fertilization, greatly reducing the workload, and improve work efficiency.