中国农业科学 ›› 2007, Vol. 40 ›› Issue (6): 1190-1197 .

• 土壤肥料·节水灌溉 • 上一篇    下一篇

基于知识模型与WebGIS的精准农业处方智能生成系统研究

陈云坪,赵春江,王 秀,马金锋,田振坤   

  1. 国家农业信息化工程技术研究中心
  • 收稿日期:2006-08-08 修回日期:2006-10-27 出版日期:2007-06-10 发布日期:2007-06-10
  • 通讯作者: 赵春江,王 秀

Prescription Map Generation System of Precision Agriculture Based on Knowledge Model and WebGIS

  1. 国家农业信息化工程技术研究中心
  • Received:2006-08-08 Revised:2006-10-27 Online:2007-06-10 Published:2007-06-10

摘要: 【目的】根据土壤采样调查结果,插值生成田块土壤肥力分布图,并以此为基础生成变量施肥处方图指导变量施肥,即可实现节省肥料、提高经济效益和保护环境的目的,是精准农业的核心思想。【方法】本系统可根据不同采样点所得的土壤养分含量,通过Kriging插值获得肥力分布图,经整合多年产量、气象和土壤等基础数据,将作物生产潜力估算、平衡施肥等知识模型与GIS相耦合。【结果】生成用于精准农业变量施肥的处方图,并通过网络予以发布,用户通过计算机网络即可获得施肥田块的作物施肥信息。【结论】构建了基于知识模型与WebGIS的精准农业处方图生成系统的基本框架和处理流程,提高了处方图的合理性和可靠性,实现了通过网络生成和发布处方图,初步解决了目前处方图生成和发布的瓶颈。

关键词: 知识模型, WebGIS, 处方图, 变量施肥

Abstract: According to the result of soil sampling and test, soil properties map can be achieved by interpolation. After that, a prescription map can be generated to conduct variable-rate fertilization. This process is the core of precision agriculture. It can not only save fertilizer, but also improve economic and environment benefit. The system which is based on Geography Information System (GIS) can: 1) interpolate soil properties map by Kriging method; 2) integrate yield, meteorological data and soil data into a database; 3) couple GIS with knowledge model, such as crop potential productivity and balanced fertilization model; 4) generate prescription map and transmit by Web. The study constructs the basic frame and process flow of precision agriculture based on knowledge model and WebGIS, improves the rationality and reliability of prescription map, implement to generate and release a prescription by Web, and make it easy to achieve a prescription map.

Key words: knowledge model, WebGIS, Prescription map, Variable-rate fertilization