摘要
【目的】针对福建省平潭岛滨海盐碱地治理缺乏普适技术的问题,探究特定配方改良剂对土壤理化性质及酶活性的影响,形成可推广的盐碱地改良与经济作物栽培技术模式。【方法】制备含浮石粉、钢渣等载体及微生物活性组分的复合改良剂,施用于不同盐碱程度地块,测定与分析土壤电导率、pH值等理化指标及脲酶、酸性磷酸酶活性。【结果】土壤改良剂使重度盐碱地的容重降低32.9%,孔隙度提升至51%,使电导率EC值降低90.7%,盐分含量降低79.5%,有机质含量提升251.5%,碱化度降低11.16%,土壤脲酶和碱性磷酸酶活性分别提升306.5%和153.3%,而pH值有所下降。【结论】土壤改良剂能有效改善平潭滨海盐碱地土壤结构、降低碱化度、提升土壤肥力与酶活性,对重度盐碱地改良效果更显著,为同类区域生态恢复与资源化利用提供科学依据。
【Objective】In response to the lack of universal technology for the treatment of Pingtan coastal saline-alkali soil,this study explores the effects of specific formula amendments on soil physicochemical properties and enzyme activity,and forms a scalable model for saline-alkali soil improvement and economic crop cultivation technology.【Method】A composite amendment containing pumice powder,steel slag and other carriers,as well as microbial active components,was prepared and applied to plots with different degrees of salinity and alkalinity.Physical and chemical indicators such as soil conductivity and pH value,as well as urease and acid phosphatase activities,were measured,and data analysis was performed using SPSS 19.0.【Result】The soil amendment reduced the bulk density of severe saline-alkali land by 32.9%,increased the porosity to 51%,reduced the EC value of conductivity by 90.7%,reduced the salt content by 79.5%,increased the organic matter content by 251.5%,and reduced the alkalinity by 11.16%.Soil urease and alkaline phosphatase activities increased by 306.5%and 153.3%,respectively,while the pH value decreased slightly.【Conclusion】This amendment can effectively improve the soil structure of Pingtan coastal saline-alkali soil,reduce the degree of salinization,enhance soil fertility and enzyme activity,and has a more significant improvement effect on severe salinealkali soil.It provides scientific basis for ecological restoration and resource utilization in similar regions.
作者
李蕊辰
林祚棋
陈蓓蓓
黄鸿辉
吴娜
范新宇
温欣
林锦香
孙刚
李汉生
Li Ruichen;Lin Zuoqi;Chen Beibei;Huang Honghui;Wu Na;Fan Xinyu;Wen Xin;Lin Jinxiang;Sun Gang;Li Hansheng(Sanming University,Sanming,Fujian 353000,China;Youxi Agricultural Seed Demonstration and Promotion Center,Youxi,Fujian 365100,China;Fujian Jiunong Ecological Agriculture Co.,Ltd.,Pingtan,Fujian 350400,China)
出处
《东南园艺》
2026年第1期44-52,共9页
Southeast Horticulture
基金
福建省星火计划项目(2024S0010)。
关键词
土壤
改良剂
滨海
盐碱地
理化性质
soil
amendments
coastal
saline-alkali soil
physicochemical properties
