Study On Reorganizing And Management System Of The Irrigation Experiment And Its Analysis

The data of irrigation experiment is the basic information of irrigation project planning and designing, optimum regional distribution of water resource, field water management, and allocation and management of water rights in the future. It is difficult to ensure the scientific characteristic of all these works without the support of the system, which manages the irrigation experiment data. So it is of great significance to develop a set of system by using the computer technique, to collection, reorganization, query, classification and pigeonholing of irrigation experiment data and thus provide technique service to related works.Based on the background of irrigation system of Hubei province and the irrigation experiment data, according to the content and management process of irrigation experiment data as well as the requirement of relevant department, this thesis developed a reorganizing and managing system for irrigation experiment data with database technique. This system has well practicality and also considered the conditions of irrigation experiment development in the future. It can be used in field water management and water saving irrigation.Based on the long time historical irrigation experiment data of Hubei province, the change laws of rice water requirement was analyzed from different aspects, such as distribution of agricultural regions, time changing, and correlationship between experiment factors. At the same time, according to the practice of irrigation regime experiment for rice, this thesis analyzed the merits and disadvantages of three irrigation regimes including "flooded irrigation with shallow water", "shallow irrigation with deeper standing water after rainfall " and "wetting irrigation" from different agricultural regions. Some conclusions and suggestions was educed from the contrastive analysis to the indices of average yield, water consumption and its coefficient, irrigation quota, irrigation times, irrigation water productivity, and efficiency of rainfall utilization under each regime. The results are very important in guiding rice irrigation in Hubei province.