农业的增产、优质、高效离不开灌溉，国家农业的发展也主要依靠于灌溉。多年的实践证明，在农作物增产以及适量适时节水技术的应用研究方面，墒情的监测预报发挥着极其重要的作用。在我国，由于土壤墒情监测站少，导致墒情信息紧缺。为改善上述现状，加强灌区信息化、农业信息化发展，在对墒情信息的实时远程采集上，有着迫切的要求。如何高效、实时的收集土壤墒情数据，对灌区作出墒情预测，并及时采取相应的措施，成为急需解决的课题。 本文在对土壤墒情监测系统功能分析的基础上，设计并实现了基于地理信息系统（GIS）的土壤墒情监控系统。该系统主要实现了数据采集、数据存储查询、GIS地图显示、并能根据墒值及天气预报信息对灌溉水量进行调控。整个系统的设计过程中，我们选用了3G通信模块MU 509进行土壤墒情数据的发送和接收。将接收到的数据信息存储到SQL Server 2008数据库中，采用Visual C++ 6.0这个面向对象的软件开发平台进行开发，结合MapX控件，使土壤墒情信息与实际地理位置相结合，使工作人员能够方便快捷的锁定地理位置，并采用Webservice跨操作系统平台和跨编程语言的远程调用技术，实现天气预报信息的提取。最后，通过数据库中的墒情数据以及天气预报情况对土壤作出墒情预测。 本系统是基于陕西省土壤墒情而设计的，经测试该系统的设计是可行的，可以实现对远程土壤信息的实时采集；在监控系统方面：墒情数据可以直观的显示在GIS地图中；根据天气预报信息和墒情信息，实现了对灌溉水量的调控。整个系统界面直观、易于操作、功能丰富，具有可行性，达到了预期的功能要求。

Agricultural yield, quality and efficiency are largely inseparable irrigation,the development of our country’s agricultural mainly relies on irrigation. Years of practice has proved that application of soil moisture monitoring and forecasting play an extremely important role in the increase in crop yields and the amount of timely aspects of water-saving technology.In our country, because the less of soil moisture monitoring stations leads to shortage of soil moisture information. To improve the situation, the development of irrigation information technology and agricultural information in real-time information and moisture entry remote collection, is an urgent requirement. How to make irrigation moisture forecast that efficient, real-time soil moisture data collected and promptly take appropriate measures, has become an urgent problem to be solved. Based on the soil moisture monitoring system function analysis, we realized the soil moisture monitoring and controlling system that based on Geographic Information System (GIS). The system realized the data collection, data storage, GIS map display and regulated irrigation water based on data collected and weather information. When the design of the entire system, we chosed the 3G communication module MU 509 to send and receive data of soil moisture. The received data is stored in the SQL Server 2008 database, we using Visual C++ 6.0 object-oriented software development platform for development. Combined with the soil moisture information and the actual location by MapX control to make the staff to lock convenient location and using remoting technology Webservice across programming languages and across operating system platforms to achieve extraction weather forecast information. Finally, we make a prediction on the soil moisture from moisture data in the database and weather forecast. This system is based on soil moisture of Shanxi Province.The system is feasible, can be achieved real-time remote soil information collection after testing. In terms of monitoring system,moisture data can be visually displayed on the GIS map, according to the weather forecast information and moisture information, the system implements the regulation of irrigation water. The system interface is intuitive, simple, feature-rich, feasible, achieved the desired functionality.