基于GIS的小麦赤霉病气象等级预报系统的设计与实现

摘要

以江苏省为例,介绍了基于地理信息系统的小麦赤霉病气象等级预报系统的设计思路及核心技术.系统采用VB.Net 2005和ArcEngine做为开发平台,基于MSSQL SERVER 2005数据库查询,利用日平均相对湿度、日平均气温和日照时数3个气象要素,用两种算法来计算小麦赤霉病发生发展的气象等级,生成包含地理信息的文字产品和图形产品,实现了小麦赤霉病气象等级业务预报.系统具有功能强大,算法高效,操作简单等特点,解决了业务部门资料分析处理和赤霉病气象等级预报的相关问题,具有很好的业务应用和推广价值.%An introduction is made to the design, development, and core technology of the weather-based graded wheat scab forecasting system based on Geographic Information System, taking Jiangsu Province as an example. The system uses VB. Net 2005 and AreEngine as a development platform, based on MSSQL SERVER 2005 database query, using such three meteorological factors as daily average relative humidity,daily mean temperature, and the daily sunshine hours. Two algorithms are used to calculate meteorological grades for wheat scab occurrence and development, and text and graphics products containing geographic information are generated, so to achieve the capability of forecasting wheat scab. The system has the characteristics of powerful capability, efficient algorithm, and simple operation, with good potentials in application.