摘要
【目的】以上海典型搬迁地为研究对象,对搬迁地土壤单项肥力指标和土壤综合肥力进行分析,探讨城中村和工业企业搬迁地土壤肥力质量特征,为科学指导搬迁地土壤用于园林绿化提供依据。【方法】选取上海典型的20个城中村搬迁地样点和16个工业企业搬迁地样点,筛选土壤pH、电导率、有机质、碱解氮、有效磷、速效钾和容重等7项指标作为肥力评价指标,采用修正的内梅罗法对搬迁地土壤肥力进行综合评价。【结果】搬迁地土壤呈碱性,电导率适宜,有机质和碱解氮质量分数相对适宜,有效磷和速效钾质量分数丰富,土壤容重大;上海市搬迁地土壤肥力综合指数均值仅为0.86;城中村搬迁地土壤肥力综合指数显著高于工业企业搬迁地(P<0.05)。【结论】上海搬迁地土壤肥力相对较差,其中59.3%的搬迁地土壤属于差等级,40.7%的搬迁地土壤属于一般等级;城中村搬迁地土壤肥力优于工业企业搬迁地土壤;搬迁地土壤用于城市园林绿化前,应通过技术手段提升土壤肥力以满足绿化种植要求。
[Objective]The objective is to analyze soil fertility index and soil fertility quality in typical relocation sites in Shanghai,and to explore the soil fertility quality characteristics of the relocated land in villages and industrial enterprises in the city,so as to provide basis for the use of the relocated soil in landscaping.[Method]The 20 typical relocation sites of urban villages and 16 relocation sites of industrial enterprises in Shanghai were selected,and 7 soil fertility indexes including pH,electrical conductivity(EC),organic matter,hydrolytic nitrogen,available phosphorus,available potassium and bulk density were selected as fertility evaluation indexes.The modified Nemoro method was used to comprehensively evaluate the quality of soil fertility in the relocation sites.[Result]The soil in the relocation site was alkaline,with suitable EC,relatively low contents of organic matter and hydrolytic nitrogen,rich contents of available phosphorus and available potassium,and high soil bulk density.The average comprehensive index of soil fertility in Shanghai was only 0.86.The comprehensive index of soil fertility in the relocation sites of urban villages was significantly higher than that in the relocation sites of industrial enterprises(P<0.05).[Conclusion]The soil fertility in the relocation sites of Shanghai is relatively poor,59.3%of which belong to“poor”grade and 40.7%belong to“general”grade.The soil fertility of urban villages is better than that of industrial enterprises.Before the relocated land is used for urban landscaping,soil fertility quality should be improved by technical means to meet the requirements of planting.
作者
伍海兵
何小丽
梁晶
WU Haibing;HE Xiaoli;LIANG Jing(Shanghai Academy of Landscape Architecture Science and Planning,Shanghai 200232,China;Shanghai Engineering Research Center of Landscaping on Challenging Urban Site,Shanghai 200232,China)
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2021年第5期1076-1081,共6页
Journal of Zhejiang A&F University
基金
上海市绿化和市容管理局科技攻关项目(G200202,G190202)。
关键词
园林绿化
搬迁地
土壤肥力
综合评价
上海
landscaping
relocation site
soil fertility
comprehensive evaluation
Shanghai
作者简介
伍海兵(ORCID:0000-0001-9382-4532),高级工程师,从事城市土壤研究。E-mail:wuhaibing22@163.com;通信作者:梁晶(ORCID:0000-0002-8118-650X),教授级高级工程师,从事城市土壤质量评价、修复及有机废弃物再利用研究。E-mail:liangjing336@163.com。
