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The quality zoning of land management reflects the management level of regional agricultural production and is also the basis of demarcation of basic farmland reserve. This paper chooses QapqalXibe Autonomous County in Yili River Valley as a research area to construct a comprehensive evaluation index system of cultivated land quality in QapqalXibe Autonomous County using methods such as exponential decay assignment, multi factor comprehensive evaluation and multi factor index based on four index factors, namely land natural quality, cultivated land use condition, land spatial form and ecological security pattern, and determine the land management quality zoning plan of the research area according to the quality evaluation level of each index. The results show that the land quality in the research area is generally in good condition, and 55.74% of the county's cultivated land is of relative high quality, and 44.99% of the cultivated land is demarcated as the basic farmland priority reserve, and the land management quality zoning of the research area plays a good role. Keywords—cultivated land quality; comprehensive evaluation; basic farmland demarcation

Study on Farmland Demarcation Based on County Land Management Quality Zoning A Case Study on Cha County