Study On The Calculating Method And Quality Evaluation Of Cultivated Land Requisition-compensation Balance In Different Agricultural Ecology Region

In late years,with the fast growth of the continuous development of social economy,The contradiction between the constant growth of the farmland utilization for non-agricultural construction and the rapid reduction of arable land amount for grain supply serious day and day.In order to resolve the problems of food safety in the peak year of population.the government put forward the goal of dynamic equilibrium of total arable land.Cultivated land requisition-compensation balance is one of important basis of true total dynamic balance of cultivated land.According to levels of cultivated land requisition-compensation balance,it accounted for the step's relation of cultivated land requisition-compensation balance from simplex quantity balance,quantity-quality integrated balance to quantity-quality-ecology balance; According to view of the region, On the basis of realizing the cultivated land requisition-compensation balance in uniform agro-ecological areas, realizing the cultivated land requisition-compensation balance of cross areas in different agro-ecological areas, subsequently realizing the cultivated land requisition-compensation balance in our country. The cultivated land quality was selected as the research object from many contents which in great need of studying. On the basis of further consideration definition of classification of land of agricultural land and cultivated land requisition-compensation balance, Theories and methods of the cultivated land requisition-compensation balance of in different agro-ecological areas depend on the production of classification of agricultural land were studied for realizing cultivated land quantity-quality integrated balance.The article amply expounded the meaning and essential characteristic of cultivated land requisition-compensation balance, and moreover, analyzed inherent logic relation between classification of land of agricultural land and cultivated land requisition-compensation balance. To fulfil the need of cultivated land requisition-compensation balance in the new period, aiming at special request of quantity-quality integrated balance of cultivated land requisition-compensation balance indifferent agro-ecological areas, puting forward the graft between natual quality evaluation of the production of classification of agricultural land and land use coefficient and the grafting routeway of the functional model of the natural qulity index and unit standard grain in different agro-ecological areas in uniform land uasage equivalence districts. The article congstructed the methed system of quality evaluation that was the core of element...