Design And Application Of The Country-level Agricultural Land Throughput Calculation System

At present, China is being in the industrialization and urbanization accelerate the development stage, the land supply and demand are contradictious obviously, cultivated land resources in a short period of decreasing trend becomes irreversible. In the balance of arable land during the past, the former management stresses in quantity is balanced, causes the new supplement farming quality to reduce. The balance of occupation of land in the work, whether the production capacity can reach the original level, there is no quantitative evaluation standard, also there is no accurate principle to determine whether it is "dominant" for bad. Based on this, we need to refer the land survey, based on the quality of agricultural production in China, a comprehensive grasp ability accounting agricultural comprehensive production capacity of regional agricultural condition, and make comprehensive production capacity for government decision making and comparative evaluation to provide scientific basis.Agricultural production, accounting department of land and resources is insist on scientific development outlook, strictly enforce the balance of occupation system to solve current problems, ensure the quality of cultivated land supplements does not reduce overall grain production capacity, is the important measure to ensure the sustainable development of national economy society." Design and Application of The Country-level Agricultural Land Throughput Calculation System" is based on the above background, draw support from a big new one wheel of countries land resources comprehensive investigation measures and calculates.This system is developed with the geographical information system (GIS) technology as the foundation, apply Visualization programming language C#to carry out a programming, the function need and farm-oriented landed estate having designed the system function structure, and detailed analysis, having described every build systematically can appraise a model. It has carried out system realization network environment, the environment developing and working. System develop has chosen kind three layers of structure and modularized exploitation way taking structure as basis, the method having adopt relation model to build a warehouse has built application data base. Finally, realized to edit the data calculation capacity, inquiry, deleting the amplification managing function and mapping, decreasing, translating, measuring, key element choice and picture have waited for a map to manage a function tier under the control of, have realized the farm-oriented landed estate energy accounting, potential estimating that achievement outputs as well as the function classifying farm-oriented.