Study On The Calculating For Enhancement Potential Of Cultivated Land Quality In Faku County Of Shenyang Based On Agricultural Land Gradation

The enhancement potential and transformation direction of cultivated land quality are the basis of its enhancement,transformation and construction.Therefore,a reasonable research on the calculating for the enhancement potential of cultivated land quality has certain practical significance.Based on the results of agricultural land gradation in Faku County,Shenyang City,we analyzed the limiting factors of cultivated land quality enhancement and constructed the calculate method for the enhancement potential of cultivated land quality,which provided theoretical basis by improving limiting factors and weakness of cultivated land quality enhancement.And according to the dominant limitation factor of cultivated land quality enhancement,the type of cultivated land quality improvement is divided.Taking into account the regional hydrology conditions,soil resources conditions,geological and geomorphological conditions,farmers’ farming habits and economic feasibility and other factors,the practical improvement potential of cultivated land quality in Faku County is measured.On this basis,the paper in view of the dominant limitation factor of cultivated land quality enhancement,the direction of cultivated land quality improvement is proposed.The main findings are as follows:(1)There are 12 dominant limitation factors of cultivated land quality enhancement in Faku County,and the dominant restriction degree of restriction is mild.Among them,the “Irrigation Guarantee Rate” has the widest range of restrictions,and the dominant restriction degree is mild,accounting for 24.76% of the total cultivated land area of the county.The dominant limiting factor of “obstacle layer depth” is mainly used in the medium restriction;the dominant limiting factor of “degree of salinization” is mainly used in the severe restriction.(2)The preparing cultivated land for improved quality to be upgraded in Faku County is divided into three types: water-enhanced conditions type,terrain-enhanced conditions type and soil-enhanced conditions type.The proportion of each type of cultivated land area in the total area of cultivated land in Faku County is 31.55%,4.01% and 62.68%.The water-enhanced conditions type cultivated land is mainly distributed in Sijiazimengguzu Town.The terrain-enhanced conditions type cultivated land is mainly distributed in Shijianfang Town and Baojiatun Town.The soil-enhanced conditions type cultivated land is mainly distributed in Shuangtaizi Town,Xiushuihezi Town and Yemaotai Town.(3)The theoretical enhancement potential of cultivated land quality in Faku County: The terrain-enhanced conditions type have the greatest potential for the theory of cultivated land improvement,the theoretical average lifting potential is 0.14 grade,the average lifting potential of the water-enhanced conditions type cultivated land is 0.09 grade,and the average lifting potential of the soil-enhanced conditions type cultivated land is 0.08 grade.The theoretical enhancement potential of Faku County is between 0 and 1 grade.The area of cultivated land that can be upgraded by 1 grade will account for 8.56% of the total cultivated land area of the county,and Increase from11 grade to 10 grade for most,mainly distributed in the Sijiazimengguzu Town and Shuangtaizi Town.(4)The practical enhancement potential of cultivated land quality in Faku County: The water-enhanced conditions type have the greatest potential for the practical of cultivated land improvement,the Practical average lifting potential is 0.07 grade,the average lifting potential of the terrain-enhanced conditions type cultivated land is 0.03 grade,and the average lifting potential of the soil-enhanced conditions type cultivated land is 0.05 grade.The practical enhancement potential of Faku County is between 0 and 1 grade.The area of cultivated land that can be upgraded by 1 grade will account for 5.45% of the total cultivated land area of the county,and Increase from11 grade to 10 grade for most,mainly distributed in the Sijiazimengguzu Township.(5)The construction direction of cultivated land quality enhancement in Faku County is proposed: the water-enhanced conditions type cultivated land is mainly based on irrigation and drainage engineering;the terrain-enhanced conditions type cultivated land is mainly based on land leveling project;the soil-enhanced conditions type cultivated land is mainly based on land leveling project and soil improvement project.