基于GIS的农作物病虫害预警系统的初步建立

该研究以建立农作物病虫害预警系统为目标,使用国产SuperMap IS.NET的GIS软件作为开发平台,以C 语言作为编程语言。该系统充分使用了GIS强大的空间分析功能和RS的快速、实时、大面积获取病虫害信息的功能,实现了GIS与RS在系统中的集成。系统最终将抽象的数据转化成清晰简明的电子地图,直观明了的显示了病虫害的发生程度和空间分布规律。该文重点介绍了此预警系统的数据库设计和系统的基本功能以及预警流程;最终,使用甘肃省庆阳地区西峰区2002年的小麦条锈病相关数据,来展示该预警系统中病害预测功能的实现过程,并获得了与实际报道相吻合的预警结果。研究表明,此预警系统能够对农作物病虫害进行分类预测,并根据预警结果对病虫害进行合理的预防和防治。

Establishment of prewarning system for crop diseases and insect pests

The aim of this study was to establish the prewarning and prediction system for crop diseases and pests based on SuperMap IS.NET geographic information system(GIS),which was developed by Supermap company.In this system,the authors used visualization and spatial analysis with GIS,and the large area remote sensing(RS)to acquire the information of crop diseases and insect pests.Based on these data,the occurrence and damage of various diseases and insect pests of crops could be monitored and forecasted in real time and in large areas.And ultimately,the system could transform data information into a geographical information map to show the occurrence degree and distribution on variety of diseases and pests.This paper described mainly warning flow,database design and the main functions of the system.Finally,the system realized successfully the warning of the wheat stripe rust in Xifeng region of Qingyang city in Gansu province in 2002,and the prediction result was satisfactory.It indicates that the system can classify and predict diseases and insect pests,and people can select right time and technology to control the diseases and pests by this GIS system.