基于WebGIS的山东省杂粮种植施肥决策系统建立与应用

发布时间：2018-01-21 15:08

本文关键词： GIS 杂粮决策系统施肥模型专家知识库　出处：《山东农业大学》2017年硕士论文　论文类型：学位论文

【摘要】：近年来,杂粮产业发展在粮食安全、改善居民食物结构、农民增收、缓解农村贫困以及提高农用土地利用率等方面发挥了重要作用。虽然杂粮的需求量一直在增长,但是杂粮的产量一直不高。究其原因是农民缺少科学有效的种植指导,主要表现在不合理的施肥及耕作方式上;再就是农民只能通过电视或广播获取杂粮种植指导信息,信息不通畅。数据管理方面,杂粮的产量数据、品种信息等相关数据没有系统的管理,即使有管理也是简单记录,因此,对杂粮庞大数据量的系统管理并进行数据的提取应用是非常有必要的。本课题开展了基于GIS技术杂粮种植区土壤养分含量数据库建设、杂粮施肥建模、杂粮施肥专家知识库构建、杂粮施肥决策支持系统的开发、其他系统功能应用等方面的研究。本课题完成的工作及系统功能实现包括以下方面:1设计了基于WebGIS的山东省杂粮种植施肥查询决策系统的框架体系,根据智能决策系统对框架结构的要求,设计了系统框架、构建数据库模型、专家知识库等。2设计确定基于GIS的数据库存储结构,根据GIS数据库的存储要求,建立了山东省杂粮种植施肥基础地理环境数据库等。3制定科学合理的施肥模型,通过施肥实验的方法确定了施肥模型系数。4建立杂粮施肥专家知识库,通过对专家经验知识的抽象化处理,建立适用于存储和调用的数据库。5建立施肥模型数据库、专家知识库及GIS数据库之间的耦合关系,得到杂粮空间施肥模型。基于mapobject平台,建立杂粮种植施肥决策系统。
[Abstract]:In recent years, the miscellaneous grain industry has developed in the field of food security, improving the food structure of the residents and increasing the income of farmers. The alleviation of rural poverty and the improvement of agricultural land use have played an important role, although the demand for miscellaneous food has been increasing. However, the yield of miscellaneous grain is not high all the time. The reason is that farmers lack scientific and effective planting guidance, which is mainly reflected in unreasonable fertilization and farming methods. Farmers can only get guidance information through television or radio, the information is not smooth. Data management, miscellaneous grain production data, variety information and other related data are not systematically managed. Even management is a simple record, so. It is very necessary to manage the huge amount of data and to extract the data. This paper builds the database of soil nutrient content based on GIS technology and establishes the modeling of fertilizer. The construction of expert knowledge base of miscellaneous grain fertilization and the development of decision support system for miscellaneous grain fertilization. Research on the application of other system functions. The work accomplished in this paper and the realization of the system function include the following aspects:. The main contents are as follows: 1. The frame system of query decision system of planting and fertilizing for miscellaneous grain in Shandong province based on WebGIS is designed. According to the requirements of the intelligent decision system for the frame structure, the system framework is designed, the database model, expert knowledge base and so on are designed to determine the database storage structure based on GIS. According to the storage requirements of GIS database, a scientific and reasonable fertilization model was established in Shandong Province. 3. The fertilization model coefficient was determined by fertilization experiment. 4. The expert knowledge base of miscellaneous grain fertilization was established, and the expert experience knowledge was abstracted. The database 5. 5 which is suitable for storage and call, is established to establish the coupling relationship between fertilization model database, expert knowledge base and GIS database. The spatial fertilization model of miscellaneous grain was obtained, and the decision system of planting and fertilization of miscellaneous grain was established based on mapobject platform.
【学位授予单位】：山东农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S147;TP311.52

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