The Study Of Accurate Irrigation And Fertilization Automatic Control System

Based on collecting meteorological data and field test result, accurate irrigation and automatic control fertilization using the technology of artificial intelligence are composed of language C, which accords to water equilibrium principle, object yield of crop and information of fertility character and so on. The chip micro-comupter is the center of system controller. The high precision detector of soil moisture monitors changes of soil moisture automatically. By way of man-machine conversation and menu choice, devices of soil moisture, irrigators and fertilizing tanks connect with the controller. So the intact control system is built. It can do many things, such as, gathering data, necessary rate of irrigation and fertilizer application to various crops in the period of growth, flow control of spray irrigation, accomplish irrigation and fertilization automatically.According to different crop, different regions, climate and crop of different periods, the system can judge whether the amount of water stored of farmland and soil drops to the lower limit index that the crop pours water and confirm quantity of irrigation and fertilization. In the end, irrigating and fertilizing can be finished automatically.The system can based on the width of field auto-adjust sprinkler pattern range and divide several microplot by the plot-area; it can based on compatibility of the fertilizer, allocate fertilizer,auto-adjust spraying fertilizer' s concetration and discharge, realize accurate irrigation and fertilization automatically, which the system running. The system can offer the wheat , the corn, the cotton etal seven corp decision-making actualize project of the accurate irrigation and fertilization,and has the favorable expansibility.The system adopts the module, mentality of designing of structurization, inputting with certain form, stores, searches, displays, practical operation and technological system analysed synthetically, according with the design principle of refinement progressively from top to bottom, the structure is easy to read, revise and operate. Using it can improve the output of crops and water manure utilization ratio notably and have good popularization using value.