湖北农业科学 ›› 2023, Vol. 62 ›› Issue (3): 21-24.doi: 10.14088/j.cnki.issn0439-8114.2023.03.004

• 土壤特性 • 上一篇    下一篇

基于主成分分析的酒泉市农田土壤肥力评价

邓喜明1, 吕铎1, 吴晓婷1, 冯涛1, 张美珍1, 朱建强2   

  1. 1.酒泉市农业科学研究院,甘肃 酒泉 735000;
    2.酒泉市农业技术推广服务中心,甘肃 酒泉 735207
  • 收稿日期:2021-11-09 发布日期:2023-04-20
  • 通讯作者: 吕 铎(1991-),男,甘肃定西人,助理研究员,硕士,主要从事土壤肥料与节水研究,(电话)19893702118(电子信箱)1570515437@qq.com。
  • 作者简介:邓喜明(1976-),男,甘肃酒泉人,助理研究员,主要从事土壤肥料与节水研究,(电话)13830759233(电子信箱)676647219@qq.com
  • 基金资助:
    酒泉市高标准农田建设项目耕地质量评价工作项目(SZQNYNCJJJG(2020)015号)

Evaluation of farmland soil fertility in Jiuquan City based on principal component analysis

DENG Xi-ming1, LYU Duo1, WU Xiao-ting1, FENG Tao1, ZHANG Mei-zhen1, ZHU Jian-qiang2   

  1. 1. Jiuquan Academy of Agricultural Sciences,Jiuquan 735000,Gansu, China;
    2. Agricultural Technology Extension Service Center of Jiuquan,Jiuquan 735207,Gansu,China
  • Received:2021-11-09 Published:2023-04-20

摘要: 为评估酒泉市农田土壤肥力状况,以期为农业可持续发展提供数据支撑。以酒泉市5县(市、区)农田土壤为研究对象,测定土壤有机质、全氮、碱解氮、速效磷、速效钾和pH 6项肥力指标,采用主成分分析法对其土壤肥力进行综合评价。结果表明,酒泉市农田土壤有机质和氮素普遍偏低,磷素丰富,钾素中等,pH偏碱性,农田土壤养分的空间分布存在一定的不均匀性,但变化不大。主成分分析表明,引起酒泉市农田土壤肥力变化的主要因子为有机质,酒泉市农田土壤综合肥力从高到低依次为肃州区、瓜州县、敦煌市、玉门市、金塔县。综上,酒泉市的土壤肥力总体水平良好,建议遵守补充有机肥和氮肥、减施磷肥及稳施钾肥的原则。

关键词: 主成分分析, 土壤肥力, 农田, 酒泉市

Abstract: To evaluate the farmland soil fertility status in Jiuquan City and provide data support for the sustainable development of agriculture. Taking the farmland soil of five counties (cities, districts) in Jiuquan City was taken as the research object, six fertility indexes of soil organic matter, total nitrogen, alkali-hydrolyzable nitrogen, available phosphorus, available potassium and pH were determined, and the soil fertility was comprehensively evaluated by principal component analysis. The results showed that the organic matter and nitrogen of farmland soil in Jiuquan City were generally low, the phosphorus was rich, the potassium was medium, and the pH was alkaline. The spatial distribution of farmland soil nutrients was uneven, but the change was not significant. The principal component analysis showed that the main factor causing the change of farmland soil fertility in Jiuquan City was the organic matter, and the comprehensive fertility of farmland soil in Jiuquan City from high to low was Suzhou District, Guazhou County, Dunhuang City, Yumen City, and Jinta County. To sum up, the overall level of soil fertility in Jiuquan City was good. It was recommended to follow the principles of supplementing organic fertilizer and nitrogen fertilizer, reducing phosphorus fertilizer and stabilizing potassium fertilizer.

Key words: principal component analysis, soil fertility, farmland, Jiuquan City

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