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南京市中心城区道路绿地土壤肥力调查与评价
引用本文:丁爱芳,赵继阳,李铭,藏庭亮.南京市中心城区道路绿地土壤肥力调查与评价[J].北方园艺,2011(9):87-89.
作者姓名:丁爱芳  赵继阳  李铭  藏庭亮
作者单位:1. 南京晓庄学院生化与环境工程学院,江苏,南京,211171
2. 南京市园林局绿化管理处,江苏,南京,210008
基金项目:南京市园林局资助项目(200901)
摘    要:采集了南京市中心城区部分主干道路0~20 cm和20~40 cm的绿地土壤,研究其容重、土壤孔隙度、pH、有机质、有效养分含量等理化性质,以了解道路绿地土壤的基本性状。结果表明:南京城市道路绿地表层土壤(0~20 cm)容重大,孔隙度小;pH在7.21~9.00之间,较自然土壤明显偏高,以偏碱性为主;0~20 cm和20~40 cm土壤中,土壤有机质平均值分别为23.6、17.7 g/kg,碱解氮平均值分别为50.493、2.39 mg/kg,基本处于中偏低水平;速效磷平均值分别为24.21、5.1 mg/kg,处于中偏高水平。土壤脲酶活性、碱性磷酸酶活性与土壤有机质和碱解氮含量显著相关(P<0.01),可以作为表征城市绿地土壤肥力的生物指标。

关 键 词:道路土壤  理化性质  酶活性  南京市

Study on Fertility Characters of Road Greenbelt Soil in Nanjing City
DING Ai-fang,ZHAO Ji-yang,LI Ming,ZANG Ting-liang.Study on Fertility Characters of Road Greenbelt Soil in Nanjing City[J].Northern Horticulture,2011(9):87-89.
Authors:DING Ai-fang  ZHAO Ji-yang  LI Ming  ZANG Ting-liang
Institution:DING Ai-fang1,ZHAO Ji-yang1,LI Ming2,ZANG Ting-liang2(1.College of Biochemical and Environmental Engineering,Nanjing Xiaozhuang University,Nanjing,Jiangsu 211171,2.Bureau of Green Management of Nanjing Landscape Gardening,Jiangsu 210008)
Abstract:Soil samples with 0~20 cm and 20~40 cm depths of road greenbelt were collected at central district in Nanjing City.Their bulk density,soil porosity,pH,organic matter,available nutrients were studied in this paper.The results showed that surface soil(0~20 cm) had a high bulk density,low porosity.The pH values of soil were 7.21~9.00,dominated by alkaline.In 0~20 cm and 20~40 cm layer,the average contents of soil organic matter were 23.6,17.7 g/kg,and alkali-hydrolyzable N were 50.49,32.39 mg/kg respectively,being in the low level.Whereas available P were 24.2,15.1 mg/kg,being in the high level.Urease and alkaline phosphatase activity had significant relation with soil organic matter and alkali-hydrolysable N,and were biological indicators for fertility of road greenbelt soil.
Keywords:road greenbelt soil  physical and chemical properties  enzyme activity  Nanjing city  
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