Exploratory Research On The Standard Of Shredding Of Cultivated Land In Land Consolidation In Guizhou Province

The fragmentation of cultivated land is a long-term phenomenon in the development of China's agriculture.With the development of productivity and the advancement of science and technology,the rural labor force has shifted to the secondary and tertiary industries,and the scale of agricultural production has become an inevitable requirement for the development of modern agriculture in China.The fragmentation of cultivated land no longer adapts to the development of agriculture,and improving the fragmentation of cultivated land is a problem that must be solved in the development of large-scale agriculture.Land remediation plays an important role in promoting the rational use of land and improving agricultural production conditions.It is one of the most basic construction projects in rural China and one of the most effective ways to improve the problem of finely shredded land.In this paper,Guizhou Province,where the phenomenon of arable land fragmentation is relatively serious,is regarded as the research area of this paper.The total number of projects through land remediation in Guizhou Province,the total project scale,the total investment of the project,the area of newly cultivated land,the construction of high standard farmland area and the type of land remediation,etc.The basic information is used to analyze the status quo of land remediation in Guizhou Province,and the characteristics of land remediation in Guizhou Province are summarized.Based on the characteristics of the arable land fragmentation space,the multi-index landscape pattern index method is used to select three first-level indicators and six second-level indicators.The entropy weight method is used to empower each measurement index,and finally the land remediation is constructed.-Comprehensive calculation model of cultivated land fineness.The 34 land remediation projects that have been completed in Guizhou Province will be collected as samples,and divided into 101 measuring units according to the three grades of 0°-6°,6°-15°,and 15°-25° for “land remediation—cultivated land.The measurement of the fineness is obtained,and the comprehensive measurement results of each measurement unit and sample item are obtained.Analyze the comprehensive calculation results,and use the project level and grade as the grading unit,and propose the standard of arable land shredding under the corresponding project level and slope level in Guizhou Province land remediation.The main findings of this paper are:(1)The status quo of land remediation in Guizhou Province has the following five characteristics: 1 regional differentiation is obvious;2 is increased from the central point,3 small-scale projects are significant;4 is difficult to rectify,and the cost of remediation is high;5 current field construction The standard is backward.(2)There is a significant negative correlation between the slope height and the comprehensive calculation results of “land remediation-cultivation fineness”.The higher the slope,the lower the comprehensive calculation result and the more serious the fragmentation of cultivated land.The level of land remediation project has a significant positive correlation with the comprehensive calculation results of “land remediation—gritty land fragmentation”.The higher the level of land remediation project,the higher the comprehensive calculation result,indicating that the degree of arable land fragmentation in land remediation is lighter.(3)According to the comprehensive calculation results of “Land Remediation—Cultivated Land Fragmentation”,the arithmetic mean of the calculation results under each project level and slope level is taken as the “land remediation-cultivation fineness” standard under the corresponding level,and the provincial land remediation project The comprehensive calculation results of individual projects should be ?0.53,and the comprehensive calculation results under the 0°-6° slope level should be ?0.37,and the comprehensive measurement results under the 6°-15° slope level should be ?0.20,15°-25° slope level.The comprehensive calculation result should be ?-0.04;the comprehensive calculation result of the single project of the municipal land improvement project should be ?-0.16,and the comprehensive calculation result under the 0°-6° slope level should be ?0.11,6°-15° grade The comprehensive calculation results should be ?0.01,and the comprehensive calculation results under the gradient of 15°-25° should be ?-0.27;the comprehensive calculation results of individual projects of county-level land consolidation projects should be ?-1.35,of which 0°-6° slope level The comprehensive calculation results should be ?-0.30,and the comprehensive calculation results under the gradient of 6°-15° should be ?-0.48,and the comprehensive calculation results under the gradient level of 15°-25° should be ?-0.56.