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| 宿州市耕地土壤养分时空变化特征分析 |
| Temporal and spatial characteristics of soil nutrients in cultivated land in Suzhou City |
| 投稿时间：2021-11-26 |
| DOI：10.13254/j.jare.2021.0826 |
| 中文关键词: 耕地，土壤有机质，全氮，有效磷，速效钾，GIS，宿州市 |
| 英文关键词: ： cultivated land, soil organic matter, total N, available P, available K, GIS, Suzhou City |
| 基金项目:安徽省教育厅高校协同创新项目（GXXT-2019-047）；国产高分辨率对地观测系统安徽区域综合应用示范项目 |
| 作者 | 单位 | E-mail | | 丁琪洵 | 农田生态保育与污染防控安徽省重点实验室, 安徽农业大学资源与环境学院, 合肥 230036 | | | 詹雪洁 | 农田生态保育与污染防控安徽省重点实验室, 安徽农业大学资源与环境学院, 合肥 230036 | | | 张天恩 | 农田生态保育与污染防控安徽省重点实验室, 安徽农业大学资源与环境学院, 合肥 230036 | | | 许诺 | 宿州市农业农村局, 安徽 宿州 234000 | | | 马秀婷 | 安徽华成种业股份有限公司, 安徽 宿州 234000 | | | 张长坤 | 安徽华成种业股份有限公司, 安徽 宿州 234000 | | | 马友华 | 农田生态保育与污染防控安徽省重点实验室, 安徽农业大学资源与环境学院, 合肥 230036 | yhma@ahau.edu.cn |
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| 中文摘要: |
| 分析土壤养分时空演变是实施精准农业与可持续土壤管理的前提。本研究利用反距离权重空间插值分析方法分别对宿州市2010年和2019年的耕地土壤有机质、全氮、有效磷和速效钾含量进行时空变化特征分析。结果表明，相比于2010年，2019年宿州市耕地土壤养分总体略微提升。其中：耕地土壤有机质总体分布为砀山县、萧县和泗县较缺，埇桥区中部乡镇较丰，均值为17.95g·kg-1，增幅6.15%，土壤有机质中等含量面积占总耕地面积的76.00%；土壤全氮含量基本持平，均值为1.06g·kg-1，土壤全氮中等含量面积占总耕地面积的60.80%；耕地土壤有效磷总体分布为砀山县南部乡镇较丰，埇桥区北部、泗县北部及南部乡镇较缺，均值为16.44mg·kg-1，增幅10.73%，土壤有效磷中等含量面积占总耕地面积的60.33%；耕地土壤速效钾总体分布为萧县、砀山县中等，埇桥区中部乡镇、灵璧县西部乡镇、泗县北部乡镇丰富，均值为149.37mg·kg-1，增幅9.84%，土壤速效钾中等含量面积占总耕地面积的47.30%。砂姜黑土、水稻土和黄褐土有效磷含量明显提升，增幅分别为27.76%、23.08%和16.68%。砂姜黑土和水稻土速效钾含量略微提升，增幅为18.37%和14.62%。石灰岩土速效钾略微降低，降幅11.86%。研究表明，2010—2019年宿州市耕地土壤养分呈有机质总体上升、全氮稳定、有效磷明显上升、速效钾稳中有升的变化规律。宿州市北部应注意增施有机肥和氮肥，东部可考虑补充磷肥、钾肥。 |
| 英文摘要: |
| Analyzing the temporal and spatial evolution of soil nutrients is a prerequisite for implementing precision agriculture and sustainable soil management. The spatial and temporal variation characteristics of soil organic matter, total N, available P, and available K in arable soil in Suzhou City in 2010 and 2019 were analyzed by inverse distance weighted spatial interpolation analysis method. The results showed that the soil nutrients of arable soil in Suzhou increased slightly in 2019 compared with 2010. The soil organic matter of arable soil was relatively scarce in Dangshan County, Xiaoxian County, and Sixian County, and abundant in the middle towns of Yongqiao District, with an average value of 17.95 g·kg-1, an increase of 6.15%. The area with intermediate soil organic matter content accounted for 76.00% of the total cultivated land area; the soil total N content was the same, with an average value of 1.06 g·kg-1.The area with medium soil total N content accounted for 60.80% of the total cultivated land area. The available P in arable soil was more abundant in the southern townships of Dangshan, with an average value of 16.44 mg·kg-1, an increase of 10.73%. However, the available P in arable soil was lacking in the northern Yongqiao District, and deficient in the northern and southern towns of Sixian. The area with medium content of available P in arable soil accounts for 60.33% of the total arable soil area. The soil available K in arable soil was generally medium in Xiaoxian and Dangshan, rich in towns in the middle of Yongqiao District, towns in the west of Lingbi, and abundant in towns in the north of Sixian, with an average value of 149.37 mg·kg-1 an increase of 9.84%.The area with intermediate available K in soil accounts for 47.30% of the total arable soil area. The content of available P in sandy ginger black soil, paddy soil, and yellow-cinnamon soil increased significantly, with an increase of 27.76%, 23.08% and 16.68%, respectively. The content of available K in sand black soil and paddy soil increased slightly by 18.37% and 14.62%. The available K of limestone soil decreased slightly by 11.86%. The soil nutrients of arable soil in Suzhou City showed a general increase in organic matter, stable total N, a significant increase in available P, and a steady increase in available K. The northern part of Suzhou City should pay attention to increasing the application of organic fertilizer and nitrogen fertilizer, and the eastern part should pay attention to supplementing phosphate fertilizer and potassium fertilizer. |
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