Reseach On Calculation Of Agricultural Land Productivity

Based on results of agricultural land classification project, this paper studies the agricultural land comprehensive productivity of siyang county of Jiangsu province from a new perspective in order to offer a theoretical basis and technological support for the strategies of agricultural land protection and food security in siyang county of Jiangsu province. Based on study of predecessors, the intension of agricultural land comprehensive productivity was explained, the engagement of agricultural land classification and agricultural land comprehensive productivity was achieved, the theoretical system of agricultural land comprehensive productivity and productive potential was established, including theoretical productivity, feasible productivity and actual productivity. Different productivity form different potential of production, including theoretical intensity of utilization and production potential, feasible intensity of utilization production potential. Then we connect the natural, social and economical condition in Siyang county, study on the county of agricultural land classifiable factor index region in order to calculate comprehensive productivity of agricultural land. The calculation model of agricultural land comprehensive productivity and productive potential in different levels was discussed, the best calculation method of agricultural land comprehensive productivity was finally found.The paper includes six chapters:The first chapter is the introduction; it mainly discusses the background and significance of the research on the agricultural land comprehensive productivity, and analyses the research progress of the production potential for crops. Then the research contents, purpose, ideas, method, the frame of the paper are bringing up.The second chapter relates the summarization of the agricultural land productivity, including the basic conception, theoretical foundation, methods and technical scheme.The third chapter introduces the research system of agricultural land, the join of agricultural land classification and agricultural land comprehensive productivity was realized, the idea and technical scheme of theoretical productivity, feasible productivity and actual productivity are analyzed.The fourth chapter is an example of Siyang County. Connecting the natural, social and economical condition in Siyang County, we study on the county of agricultural land classification project in order to calculate comprehensive productivity of agricultural land. The calculation model of agricultural land comprehensive productivity and productive potential in different levels was introduced, the best calculation method of agricultural land comprehensive productivity was finally found. Based on the model we can calculate the theoretical productivity, feasible productivity. Different productivity form agricultural land intensity of utilization and production potential. At last, the paper makes some questions for improving agricultural land productivity on the basis of limiting factors in Siyang County.There is discussion and advice for the paper in fifth chapter. The whole research is summarized and possible shortcomings are pointed out. It explains the apolitical suggestion of agricultural land comprehensive productivity, such as use and complement of cultivated land, the overall plan of land use, farmland capital protection and so on.