Research And Application Of Automatic Measurement And Control System For Water-saving Irrigation Model Of Rice

The problem of water scarcity is increasing with the development of society and the progress of science and technology,this leads to the development of automation,informatization and intellectualization of irrigation system is imperative.As far as the existing control systems,the decisions on irrigation or drainage of farmland are mostly depends on manpower,the pertinence of irrigation mode is poor,and the efficiency in the use of irrigation water needs to be further improved.Therefore,the research of automatic measurement and control system for water-saving irrigation model of rice is put forward in this paper.The measurement and control system can monitor meteorological and environmental parameters and growth environment parameters in real-time through relevant sensor networks.Combined with the water demand model of crops and its growing environment,it can realize the all-around monitoring of rice growing environment.Intelligently control the water supply of rice according to the water demand,so as to achieve the goal of intelligent water-saving irrigation.First of all,this paper introduces the research status and development trend of irrigation measurement and control system,analyzes the functional requirements of irrigation measurement and control system of Taihu rice demonstration park in Xishan District,Wuxi City,Jiangsu Province,and determines the whole design program.Secondly,to achieve the intelligent irrigation,the establishment of the system's irrigation water demand model is a top priority.Based on the actual planting situation of the rice demonstration park and the opinions of the cultivation experts,based on the water requirement and irrigation requirements of each growth stage of the crop,the calculation formula and calculation method of the irrigation model were determined,which provided a basis for the decision of the irrigation measurement and control system.Finally,according to the monitoring environmental parameters and meteorological parameters of crop growth,the comprehensive database of irrigation measurement and control system of Taihu Rice Demonstration Park in Xishan District was constructed by integrating crop growth model.On this basis,the system platform was built with B/S model as the framework and Programmable Logic Controller(PLC)as the core,the platform is built through the THINK PHP framework,and XMAPP software is used to develop the running environment of the system.SQL language is used to realize the construction of database and data management,and PHP language is used to realize the development of related software system functions.The functions of real-time monitoring,database management and recording,irrigation model decision-making,intelligent control,remote monitoring and control of the irrigation system of Taihu Rice Demonstration Park in Xishan District were realized,and the purpose of intelligent monitoring and control of the water demand irrigation in the demonstration park was achieved.When debugging and running on the spot,the users of the demonstration park can visit the Web server of the irrigation measurement and control the system through the web-page to view related data information,irrigation area screen,pump valve operation status and so on.When the system intelligent matching irrigation strategy does not meet the actual requirements,it can also be manually changed by the control button irrigation strategy.After the design and commissioning of the irrigation monitoring and control system was completed,the rice growth in the irrigation experimental area was compared with the rice cultivated under the traditional artificial method.The rice utilization rate was increased from 0.54 to 0.7 using rice irrigation control system.It has also been raised from 580kg/mu to 630kg/mu,which has met the requirements of improving water resource utilization and increasing crop yield.