明雪 黄智刚

摘要：【目的】以貴港市平南县耕地为研究对象，建立县域耕地质量等级评价体系，为耕地利用和可持续发展提供参考依据。【方法】利用平南县土地利用、高分遥感影像等数据，在GIS平台采用国家土肥部门的耕地质量评价技术，进行2020年耕地质量评价研究。【结果】平南县耕地质量平均等级为5.5，其中一等地占比为0.31%，二等地占比为0.32%，三等地占比为3.33%，四等地占比为13.87%，五等地占比为32.82%，六等地占比为32.2 1%，七等地占比为12.Og%，八等地占比为3.73%，九等地占比为1.08%，十等地占比为0.24%。【结论】“十二五”期间，平南县耕地质量等级有所提升，障碍类型中无明显障碍型占比60%以上，但中等级耕地占比达到了78.90%，表明平南县耕地质量有较大的提升空间。【建议】针对瘠薄培肥型、灌溉改良型、渍潜稻田型等耕地，应加大资金、技术和物资投入力度，增强土地生产能力，提高耕地产出率，实现社会和自然可持续发展。关键词：耕地质量等级评价;Gls技术;平南县;耕地质量提升

中图分类号：F323.211

文献标识号：A 文章编号：1003-4374（2021）06-0064-07

Evaluation of Cultivated Land Quality Grade in Pingnan County

Ming Xue ， Huang Zhi-gang

（College of Agriculture， Guangxi University， Nanning， Guangxi 530004. China）

Abstract： [Objective] Taking the cultivated land in Pingnan County， Guigang City as the researchobject， the quality evaluation system of cultivated land quality grade in the county area was estahlishedto provide reference for the cultivated land utilization and sustainable development. [Method] Based onthe data of land use and high-resolution remote sensing image in Pingnan County， the cultivated landquality in 2020 was evaluated by using the cultivated land quality evaluation technology of national soiland fertilizer department in GIS platf'orm. [Result] The results showed that the average grade ofcultivated land quality in Pingnan County was 5.5， among which the proportion of f'irst class land was0.31%. The second class accounted f'or 0.32%. The third class accounted for 3.33%. The fourth levelaccounted for 13.87%. The fifth level accounted for 32.82%. The sixth level accounted for 32.21%. Theseventh level accounted for 12.Og%. The eighth level accounted for 3.73%.The ninth level accounted for1.08%. The tenth level accounted for 0.24%. [Conclusion] During the 12th Five-Year plan， thequality of' cultivated land in Pingnan County has been improved. Among the obstacle types， no obviousobstacle accounted for more than 60% . but the proportion of medium-grade cultivated land reached78.90% . which show that the county cultivated land quality has great room to improve. [Suggestion]The investment of capital， technology and materials should be increased for barren fertilizing ty pe，improved irrigation type and paddy field type， so as to enhance the productivity of land， improve theyield rate of cultivated land and realize the sustainable development of social and natural resources.Keywords： cultivated land quality grade evaluation，GIS technology，Pingnan County improved qualityof cultivated land

耕地作为粮食安全的基本保障，耕地质量的好坏直接影响其经济发展能力的强弱。我国从1999年第一次对农用地开展了分等工作[1]，2009年发布了我国第一份耕地质量等级评定结果《中国耕地质量等级调查与评定》[2]。基于第二次全国土地调查的结果，2014年以来开展了耕地质量等级年度更新评价工作。[3]根据新颁布的《耕地质量调查监测与评价办法》（农业农村部令2016年第2号）和《耕地质量等级》（ GB/T 33469-2016）国家标准（以下简称《国标》），在2017年开展了新一轮的全国耕地质量评价工作。……