浙江农业科学 ›› 2025, Vol. 66 ›› Issue (5): 1257-1262.DOI: 10.16178/j.issn.0528-9017.20250054

• 资源与环境 • 上一篇    下一篇

园林绿化垃圾堆肥和生物质炭对滨海盐渍土土壤理化特性的影响

刘芹()   

  1. 上海奉贤园林绿化工程有限公司, 上海 201403
  • 收稿日期:2025-01-22 出版日期:2025-05-11 发布日期:2025-05-20
  • 作者简介:刘芹(1977—),女,上海人,高级工程师,本科,研究方向为园林工程技术,E-mail:309838967@qq.com
  • 基金资助:
    上海奉贤建设发展(集团)有限公司科研项目(YL202403)

Effects of garden waste compost and biochar on the physicochemical properties of coastal saline soils

LIU Qin()   

  1. Shanghai Fengxian Landscape Engineering Co.Ltd., Shanghai 201403
  • Received:2025-01-22 Online:2025-05-11 Published:2025-05-20

摘要:

为探究园林绿化垃圾堆肥和生物质炭土壤改良剂对滨海盐渍土质量的影响,设置对照组(CK)、绿化垃圾堆肥处理组(GW)和生物质炭处理组(BC)进行试验,并测定土壤理化性质和种子发芽指数。研究结果表明:在种子发芽指数方面,生物质炭处理优于堆肥处理,其中,堆肥处理土壤种子发芽指数为88%,较对照组(67%)增加了21百分点,生物质炭处理土壤种子发芽指数为96%,较对照组增加了29百分点。土壤物理特性方面,堆肥处理显著提高了最大持水量、毛管持水量、毛管孔隙度及入渗率,并降低质量含水率和非毛管孔隙度;生物质炭处理显著增加了土壤容重、质量含水率和入渗率,但降低了最大持水量、毛管持水量、毛管孔隙度和总孔隙度。土壤化学特性方面,堆肥处理显著提升土壤有机质、全氮含量及碳氮比,同时降低pH值和电导率(EC);生物质炭处理则显著提高土壤有机质、全氮含量、碳氮比及pH值,并降低EC值。研究结果揭示了2种改良剂的作用机制,为盐渍化地区的土壤质量改良提供理论依据和技术支持。

关键词: 盐渍土, 园林绿化垃圾堆肥, 生物质炭, 土壤特性, 上海

Abstract:

In order to explore the effects of garden waste compost and biochar soil conditioner on the quality of coastal saline soil, the control group (CK), green waste compost treatment group (GW) and biochar treatment group (BC) were set up. The results showed that: in terms of seed germination index, biochar treatment was superior to composting treatment, in which the soil seed germination index of composting treatment was 88%, which was 21 percentage points higher than that of the control group (67%), and the soil seed germination index of biochar treatment was 96%, which was 29 percentage points higher than that of the control group. In terms of soil physical properties, composting treatment significantly increased the maximum water holding capacity, capillary water holding capacity, capillary porosity and infiltration rate, and reduced the mass moisture content and non capillary porosity; Biochar treatment significantly increased soil bulk density, mass moisture content and infiltration rate, but decreased the maximum water holding capacity, capillary water holding capacity, capillary porosity and total porosity. In terms of soil chemical properties, composting treatment significantly increased soil organic matter, total nitrogen content and carbon nitrogen ratio, while reducing pH value and electrical conductivity (EC); Biochar treatment significantly increased soil organic matter, total nitrogen content, carbon nitrogen ratio and pH value, and decreased EC value. The results reveal the mechanism of the two amendments, and provide theoretical basis and technical support for soil quality improvement in salinized areas.

Key words: saline soil, garden waste composting, biochar, soil properties, Shanghai

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