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大兴区特色农业产区土壤养分评价及空间特征

2021-07-25哈雪姣

安徽农学通报 2021年12期
关键词:特色农业评价

哈雪姣

摘 要:基于北京大兴区耕地质量等级调查评价成果,按《土地质量地球化学评价规范》(DZ/T 0295—2016)補充采样调查测试,开展研究区特色农业产区土地质量地球化学评价。结果表明,研究区特色农业产区土壤养分综合等级主要以二等为主,面积为10266.18hm2,占特色农业产区总面积的53.67%;土壤环境质量总体优良,土地质量状况整体良好。特色农业产区土地质量地球化学评价结果可揭示特色农业产地土地质量等级以及重要土地问题,为区域特色农产品与生态农业开发等提供依据。

关键词:土壤养分;地球化学评价;特色农业;空间分布

中图分类号 S158.2 文献标识码 A文章编号 1007-7731(2021)12-0090-05

Evaluation and Spatial Characteristics of Soil Nutrients in Characteristic Agricultural Producing Areas of Daxing District

HA Xuejiao

(Soil and Fertilizer Workstation of Daxing District, Beijing 1026000, China)

Abstract: Based on the results of the cultivated land quality grade investigation and evaluation in Daxing District, Beijing, the land quality geochemical evaluation in the featured agricultural producing areas of the study area was carried out according to the supplementary sampling survey and test in the "Land Quality Geochemical Evaluation Standard" (DZ/T02952016).The results showed that the soil nutrient comprehensive grade in the featured agricultural production area of the study area was mainly second class, with an area of 10266.18hm2, accounting for 53.67% of the total area of the featured agricultural production area. The overall quality of soil environment was good, and the land quality was good.The geochemical evaluation results of land quality in characteristic agricultural producing areas can reveal the land quality grades and important land problems in characteristic agricultural producing areas, and provide the basis for the development of regional characteristic agricultural products and ecological agriculture.

Key words: Soil nutrient; Geochemical evaluation; Spatial distribution; Featured agriculture

随着社会经济的快速发展,土地质量问题已成为各国政府和民众关注的焦点[1]。合理开发利用土地资源,发挥有限土地的最大生产潜力,对社会经济持续发展具有重要意义[2]。近年来,随着人民生活质量的提高,人们对耕地的保护意识越来越淡薄,可用作耕种的土地被建筑物所占用或因地质灾害损坏,正在逐年减少。正因如此,而清楚了解土地的地球化学属性,做到因地制宜[3]。中国地质调查局于1999年开始实施多目标区域地球化学调查计划,又称农业地质调查计划或土地质量地球化学调查计划[4]。该计划实施20年来,在支撑服务农业发展、土壤环境污染防控、土地资源管理、国家重大立法、帮助贫困地区实施精准扶贫等方面做出了重大贡献[5-7]。

本研究以特色农业土地为对象,在多目标……

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