基于GIS的推荐施肥专家系统设计与研究——以甘肃省民勤县为例

Design and study of a GIS based recommended fertilization expert system—A case study on Minqin County

利用地理信息系统(GIS)技术,在集成二次开发的基础上,构建了服务于民勤县的基于GIS的推荐施肥专家系统.系统整合了民勤县第二次土壤普查、测土施肥项目等一线农业科技工作者积累的土壤数据,并利用这些数据构建了初始施肥模型,开发了地图基本操作、系统数据维护、信息查询、施肥模型参数编辑、施肥决策支持和专题图制作6个功能模块,实现了空间信息、属性信息和施肥参数等数据的统一管理,以及地图浏览、施肥决策、专题图编制等技术服务.同时,该系统在运行过程中可以根据后期肥效试验和新的农民施肥及作物产量等数据,进一步优化施肥模型、改进施肥参数,具备不断优化和改进的特点.

Based on the geographic information system(GIS)technology and the integration of secondary development,a GIS-based recommended fertilization expert system for Minqin County was established.The system integrates the relevant soil data accumulated by front-line agricultural science and technology workers,such as the second soil census data in Minqin County,soil testing and fertilization project data.Based on these data,the initial fertilization model was constructed,and six function modules including map basic operation,system data maintenance,information query,fertilization model parameter editing,fertilization decision support and thematic map making were developed,which realized the unified management of spatial information,attribute information and fertilization parameters,as well as the functions of map browsing,fertilization decision-making and thematic map compilation.At the same time,the system can input new data of farmers fertilization and crop yield,so as to further optimize fertilization model and improve fertilization parameters,which has the characteristics of continuous optimization and improvement.