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中国农学通报 ›› 2021, Vol. 37 ›› Issue (32): 116-119.doi: 10.11924/j.issn.1000-6850.casb2021-0596

所属专题: 耕地保护

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

不同改良剂对保护地次生盐渍化土壤改良效果的研究

李彬1(), 李跃飞1(), 陶加乐1, 王维锦2, 祁石刚3, 高学双3   

  1. 1宿迁市宿豫区农业技术推广中心,江苏宿迁 223800
    2宿迁市土地整理中心,江苏宿迁 223800
    3宿迁市农业技术综合服务中心,江苏宿迁 223800
  • 收稿日期:2021-06-08 修回日期:2021-09-03 出版日期:2021-11-15 发布日期:2022-01-07
  • 通讯作者: 李跃飞
  • 作者简介:李彬,女,1990年出生,山西晋城人,农艺师,硕士,研究方向:耕地质量提升与化肥减量增效技术。通信地址:223800 江苏宿迁宿豫区珠江路1008号 宿迁市宿豫区农业技术推广中心,Tel:0527-84459561,E-mail: 1044345595@qq.com

Improvement Effects of Different Soil Amendments on Secondary Salinized Soil in Protected Field

Li Bin1(), Li Yuefei1(), Tao Jiale1, Wang Weijin2, Qi Shigang3, Gao Xueshuang3   

  1. 1Agricultural Technology Extension Center of Suyu District, Suqian Jiangsu 223800
    2Suqian Land Consolidation Center, Suqian Jiangsu 223800
    3Suqian Agricultural Technology Comprehensive Service Center, Suqian Jiangsu 223800
  • Received:2021-06-08 Revised:2021-09-03 Online:2021-11-15 Published:2022-01-07
  • Contact: Li Yuefei

摘要:

研究旨在提高保护地次生盐渍化土壤肥力,探索建立适宜当地的次生盐渍化土壤改良模式。选择宿豫区典型保护地次生盐渍化土壤,以不施处理为对照,研究施用有机肥、土壤调理剂、米糠对土壤有机质、碱解氮、有效磷以及水溶性盐的影响。结果表明:各处理均能不同程度对次生盐渍化土壤进行改良,增加土壤养分,降低土壤含盐量。与对照相比,施用有机肥处理较对照土壤有机质、有效磷、速效钾分别提高41.6%、68.3%、121.6%,米糠处理较对照土壤有机质、速效钾显著增加41.4%、48.6%,土壤调理剂处理也有增加土壤有机质、碱解氮和速效钾含量的趋势。此外,各处理还对土壤水溶性盐分有降低效果。其中米糠处理较对照土壤电导率、水溶性盐总量、水溶性钙离子、水溶性镁离子、硫酸根离子含量分别显著降低43.3%、23.5%、28.9%、34.6%、23.2%。米糠、有机肥、土壤调理剂对次生盐渍化土壤改良效果依次递减,其中米糠改良效果较为显著。

关键词: 改良剂, 有机肥, 土壤调理剂, 米糠, 保护地, 次生盐渍化土壤

Abstract:

To improve the fertility of the secondary salinized soil in the protected field and establish a suitable secondary salinized soil improvement model, the effects of applying organic fertilizer, soil conditioner and rice bran on soil organic matter, available nitrogen, available phosphorus and water-soluble salt were studied in Suyu. The results showed that all treatments could improve the secondary salinized soil and increase soil nutrients and reduce soil salt content. Compared with the control, the organic matter, available phosphorus and available potassium in the treatment of organic fertilizer were increased by 41.6%, 68.3% and 121.6%; the organic matter and available potassium in the treatment of rice bran were significantly increased by 41.4% and 48.6%; the organic matter, available nitrogen and available potassium were also increased in the treatment of soil conditioner. In addition, the treatments reduced the water-soluble salinity of soil as well. Compared with the control, the soil conductivity, total water-soluble salt, water-soluble calcium, water-soluble magnesium and sulfate ion in the treatment of rice bran were significantly reduced by 43.3%, 23.5%, 28.9%, 34.6% and 23.2%, respectively. The improvement effects of rice bran, organic fertilizer and soil conditioner on secondary salinized soil decrease successively, and the improvement effect of rice bran is more significant.

Key words: soil amendment, organic fertilizer, soil conditioner, rice bran, protected field, secondary salinized soil

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