测土施肥专家决策系统的设计与实现

发布时间：2019-04-25 12:40

【摘要】：测土施肥技术是以土壤养分信息为基础,根据作物的养分需求规律和土壤供养率以及肥料效应等计算详细的施肥信息,利用计算机农业专家系统推广测土施肥技术已成为当前解决农业生产问题的有效措施。测土施肥专家决策系统的开发是以农业专家信息为主要参考数据,以最新的测土施肥技术为核心,将.NET技术、数据库技术及专家系统相结合,实现了一个集信息管理、推理决策、参数计算等特点的农业专家系统。该系统具有方便的信息管理功能,并提供了多种科学的种植和施肥决策方案,帮助农民降低种植成本,提高养分利用率,从而获得更大的经济效益。本文针对需求分析完成了系统的结构和功能设计,采用SQL Server 2008作为本系统的后台数据库,完成了综合数据库和知识库的构建。通过研究测土施肥技术的计算模型及其相关参数,完成了施肥模型的建立,并根据施肥模型的特点设计了决策的推理机制及基本流程。使用Visual Studio 2010作为开发平台,开发语言选择C++,完成了测土施肥专家决策系统的功能设计,使系统可以实现方便快捷的数据管理,并可以根据土壤的养分信息决策出适宜的作物、合理的施肥量以及详细的施肥方法等。根据系统的功能还制订了用户权限分配和数据库维护方案,利用基于角色的用户权限管理方法,结合相应数据表的导入导出,很好的实现了系统的数据维护功能。硬件方面还拓展了GPRS无线传输模块,方便计算机与检测设备或用户手机之间的数据通信。
[Abstract]:Soil-measured fertilization technology is based on soil nutrient information, and calculates detailed fertilization information according to the law of crop nutrient demand, soil nutrient rate and fertilizer effect, etc. It has become an effective measure to solve the problem of agricultural production by using the computer agricultural expert system to popularize the technique of soil testing and fertilization. The development of soil-testing fertilization expert decision-making system is based on the agricultural expert information as the main reference data, taking the latest soil-testing fertilization technology as the core, combining. Net technology, database technology and expert system to realize a set of information management. Agricultural expert system with the characteristics of reasoning and decision-making, parameter calculation and so on. The system has a convenient function of information management, and provides a variety of scientific planting and fertilization decision-making schemes to help farmers reduce planting costs, improve nutrient utilization, and thus achieve greater economic benefits. In this paper, the structure and function of the system are designed according to the requirement analysis. SQL Server 2008 is used as the background database of the system, and the comprehensive database and knowledge base are constructed. By studying the calculation model of soil-testing fertilization technology and its related parameters, the establishment of the fertilization model was completed, and the reasoning mechanism and basic flow chart of decision-making were designed according to the characteristics of the fertilization model. Using Visual Studio 2010 as the development platform and developing language selection C, the function design of the expert decision-making system for soil testing and fertilization has been completed, so that the system can realize convenient and quick data management. According to the nutrient information of soil, the suitable crops, reasonable amount of fertilizer application and detailed fertilization methods can be determined. According to the function of the system, the scheme of user rights allocation and database maintenance is made. By using the role-based user rights management method, combined with the import and export of the corresponding data tables, the data maintenance function of the system is well realized. The hardware also extends the GPRS wireless transmission module to facilitate the data communication between the computer and the testing equipment or the user's mobile phone.
【学位授予单位】：西北师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S147;S126

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