Mian Country Farmland Productivity Calculation Research And Implementation Method

At the age of industrialization, urbanization rapid rising, land supply and demand contradiction is pressing. Because of China's large population, this one contradiction is manifested obviously, the decrease of the cultivated land resource is irreversible in the short term. The main strategy of our country dealing with farmland is quantity balance, so it's easy to make mistakes in other areas. For example Whether the complementary land production capacity can reach the original level lacks of quantitative evaluation criteria, There is also no exact judging principle about the "possess the superior and compensate the poor", which leads to the quality of new supplementary cultivated land decline seriously. The instability as quality and number of cultivated land require to implement farmland productivity calculation as soon as possible,which can provide scientific basis for government decision making. This paper based on thorough discusses for theory and method of farmland productivity calculation, make Mian County as an example, collect and sort related material, and field survey essentially of farmland productivity calculation. Meanwhile, the paper establish regression models of Theory yield and Natural quality index, Can realize yield and Use index., calculate every grading unit's Theory yield, Can realize yield, Theory capacity, Can realize capacity, Actual capacity, Theoretical potential, Can realize the potential, Theory strength, Can realize strength,and collect Theory yield, Can realize yield, Theory capacity, Can realize capacity of Each town and the county, make thematic maps of farmland productivity calculation of Mian country.At the last, the paper conducts the evaluation and analysis for distribution of farmland productivity, potential, utilizing intensity,and bring forward suggestion targeted for protection and planning of Mian Country's farmland,which provide technical support and decision-making basis for fine management of agricultural land resource of local government.