为了提高作物水氮动态精准调控，设计了包括硬件和软件的作物水氮智能管理系统。利用站点轮询技术、消息队列技术和PID控制技术，研发了作物水氮智能灌溉设备；在硬件产品基础上，基于节水灌溉自动化控制技术、灌溉预报技术和水氮决策模型技术，研发了与作物水氮智能灌溉设备相配套的作物水氮智能管理软件系统，实现了作物定时定量精准灌溉施氮、实时预警与智能决策。系统已在冬小麦、夏玉米和夏花生中进行应用，根据作物灌溉制度和施氮方案，智能灌溉作物生长所需的水分和氮肥。该系统操作简单、运行稳定，达到了水氮高效利用的目的。

In order to improve the dynamic and precise control of crop irrigation and nitrogen application,the study designed the intelligent irrigation and nitrogen application management system for crop including hardware and software.The system utilized the site polling technology,message queue technology and PID(proportion integral differentiat)control technology to develop crop intelligent irrigation and nitrogen application integrated machine products for crop.On the basis of hardware products,based on automatic control technology of water-saving irrigation,irrigation forecast technology and irrigation and nitrogen application decision model technology,the intelligent irrigation and nitrogen application management software system for crops compatibled with intelligent irrigation and nitrogen application integrated machine products was developed,which realized timed and quantitative precise irrigation and nitrogen,real-time warning and intelligent decision making for crops.The system has been applied in winter wheat,summer maize and summer peanut,according to crop irrigation system and nitrogen application program,and the irrigation and nitrogen amount fertilizer needed for crop growth were irrigated intelligently.The system is simple in operation,stable in operation,and achieves the purpose of efficient utilization of irrigation and nitrogen.