关键词: 大型灌区, 信息流, 信息传递与控制模型, 灌区信息化

Abstract: For further investigate the essential element of information expressed of large-scale irrigation area and constructs the overall model of irrigation area system,the system engineering method was used to analyses the information source and information flow of irrigated area.By this method,the connection and state between each element transmit the relation in the system was described systematically and a model of Information transmission and controlling of the large-scale irrigated area was constructed.The application of this model to the irrigation are informationization shows that this model has offered the feasible quantization model for realization and accurate control of the information system of irrigated area.

Key words: arge-scale irrigated area, information flow, information transmission and controlling model, irrigated area informationization