Based On The Classification Results Of Gricultural Land To Farmland And Grain Production Capability Research In Suihua

Cultivated land is the most important natural resources and means of production for human survival.The stability of cultivated land quantity and quality determines the security of cultivated land resources.The ultimate goal of cultivated land security is to achieve the stability of land productivity.The evaluation of cultivated land productivity should be objective and accurate.The distribution characteristics,quantity and production potential of cultivated land were clarified.According to the existing problems of cultivated land,a clear goal should be established in order to promote the rational utilization and protection of cultivated land resources,better coordinate the balance between urbanization and ecological environment,and adjust the contradiction between industrialization development and food security protection.This will play a key role in the sustainable utilization of land resources.Now the sustainable development of the whole society.This paper uses the comprehensive theoretical knowledge of agricultural land classification and cultivated land productivity calculation,takes Suihua City as an example,uses the comprehensive analysis method of multi-factors to determine the agricultural land classification status of Suihua City.On this basis,according to the mathematical model,the relevant software is used to calculate,and the ArcGIS 10.2 software is used to calculate the cultivated land.Spatial analysis,and finally use the Logistic curve model to fit the data and other comprehensive methods to calculate the natural production potential of cultivated land in the study area,using the production potential,economic production potential,and the actual production capacity of cultivated land and other indicators.The conclusions are as follows:(1)According to the classification of agricultural land in Suihua City,the proportion of high-quality agricultural land in Suihua City is relatively large,and the natural quality of cultivated land is divided into 6 to 10 categories,of which 7,8 and 9 categories account for more than 98% of the total cultivated land area;2)the centralized and continuous cultivated land is conducive to large-scale mechanized operation and intensive management;3)the quality of cultivated land;Quantity distribution shows regional characteristics.Black soil,chernozem soil and meadow soil are mainly distributed in alluvial plain between Hulan River and Keyin River.(2)The natural productivity potential of cultivated land in Suihua City is estimated as follows: natural productivity potential of maize 18.9 t/ha,natural productivity potential of paddy field 11.2 t/ha and natural productivity potential of dryland 22.6 t/ha;and the potential productivity of cultivated land in Suihua City is 18.4 t/ha,10.9 t/ha and 10.9 t/ha respectively.The potential productivity of dry land is 22.0 t/ha;the economic potential productivity of cultivated land in Suihua City is 17.8 t/ha for maize,10.5 t/ha for paddy field and 21.3 t/ha for dry land;and the actual grain production capacity of cultivated land in Suihua City,i.e.the total standard grain production,is 434,000 t.The cultivated land area of Suihua City is 216102.46 ha,from which the grain yield per unit area of cultivated land in Suihua City is 1991.65 kg/ha.(3)The ranking of grain production potential of cultivated land in Suihua City is: natural production potential of cultivated land > utilization production potential > economic production potential > actual production capacity,Therefore,the grain production of cultivated land in Suihua City has great potential to tap.