Study on Comprehensive Productivity of Farmland Based on Application of Farmland Classification in Chongqing

The meaning of comprehensive productivity of agricultural land was discussed based on the theory of the farmland classification.The comprehensive productivity of agricultural land based on each level application of farmland cultivation was calculated.And the productive potential of cultivated land of Chongqing was studied.The natural productive potential and actual productivity of the agricultural land were calculated by cultivated land productivity calculating method.The land productive potential of agricultural land in Chongqing was determined by studying the difference between agricultural land physical productive potential and actual productivity.The study could provide a basis for soil cultivation,land consolidation and improvement of land use efficiency.