The Application And Research Of Genetic Algorithm And GIS In The Precision Irrigation Decision Support System

In agricultural irrigation water management, change the crude management mode,adopt integrated monitoring and control system of irrigation, improving irrigationefficiency, is the developmental direction of modern water-saving irrigation technology.With the development of high-tech, especially information technology and digitaltechnology make the monitoring and management of water resources for agriculturalirrigation is possible.In view of our present country's administrate situation of irrigated areas, so it isindispensable to develop precision irrigation decision support system (DSS) withintelligentization, and it also should be simple and convenient and easy to spread. Learnfrom the past experience in irrigation decision support system, introduce a two-layermodel based on Genetic Algorithm (GA), after the laboratory experiments, it was provedhave good versatility and flexibility. The system adopts the optimize pattern based onGenetic Algorithm (GA) with two layers. The first layer is to achieve the optimization ofwater allocation of the unitary crop in the different growing period. The second layer isto achieve the optimization of water allocation of many kinds of crops. This compositionavert the limitations of Genetic algorithm (GA) validly when it used to resolve theproblem of part searching,The system can achieve the collection, management, control and policy-makingfunctions of information, use of sensor technology, GIS technology and artificialintelligence theory to achieve the collection, processing, control functions of the system.The system can rapid and accurate achieve the data collection of field atmospherictemperature, soil humidity, this system adopt MapInfo as the communicate interface ofuser and PC, this interface make the decision of strategic importance easy to see and thesystem easy to operate. In running structure, this decision support system (DSS) consistsof five modules: the data acquisition module, the information management module, the simulate module of crop water allocation, the optimize module with Genetic algorithm(GA) and the display module of irrigated areas information.In running structure, this decision support system consists of five modules:(1). Data acquisition module: achieve the collection of the basic irrigate data ofthe irrigated area;(2). Information management module: achieve data's gathering, process,administration and the pre-editing of the data;(3). Simulate module of crop water allocation: calculate the crop's need of waterand prepare data for the optimize module;(4). Optimize module with Genetic Algorithm: achieve the optimization of thegrowing area, so to attain the best profit;(5). Display module of irrigated areas information: adopt the GIS to be theinterface, make the imitated result and the optimize result clear at a glance, thisinterface make the decision of strategic importance easy to see and the system easyto operate.The research, development, popularization, application of this system will supplyscientific management and optimize transfer for our country's northern areas where lackwater.