上海世博会规划区典型绿地土壤肥力特性研究  

Study on the soil fertility characteristics of Shanghai World Exposition site

作　　者：郝冠军[1] 郝瑞军[1] 沈烈英[1] 吕子文[1] 黄懿珍[1] 赵晓艺[1] 方海兰[1] 

机构地区：[1]上海市园林科学研究所,上海200232

出　　处：《上海农业学报》2008年第4期14-19,共6页Acta Agriculturae Shanghai

基　　金：上海市科委世博会重大科技攻关专项项目[2005BA908B14(科技部);05DZ05814(科委)];上海市建设委员会绿化局专项项目(ZX050205);上海市科技兴农重点攻关项目(沪农科攻字(2007)第10-1号)资助

摘　　要：通过室外调查与室内测定相结合的方法,对2010年上海世博会规划区内典型绿地的土壤肥力特征进行了研究。结果表明:世博会规划区绿地土壤普遍存在pH值高、EC值低、通气性差、水解氮含量低的特点,但有机质、容重、阳离子交换量、有效磷和速效钾能满足植物生长需要;相对于小区、学校等附属绿地,重工业基地附属绿地土壤速效养分、土壤孔隙等较低,土壤质量呈现下降趋势;土壤肥力内梅罗综合评价结果表明,世博会规划区内85%绿地土壤属中等肥力,15%属肥力瘠薄,土壤肥力总体偏低。部分肥力相对贫瘠或存在污染可能的土壤,适当改良或修复后可以应用于世博园绿地建设。By outdoor investigation and indoor experiments, the soil fertility of typical greenbelts in Shanghai World Exposition site was studied. Results showed that the soils generally have high pH, low EC value, poor aeration, and low content of hydrolysable nitrogen. But the soil organic matter, bulk density, CEC, available phosphorous and readily available potassium are enough for the need of plant growth. The greenbelts of residential and school areas have higher soil fertility and soil porosity than those of the heavy industry area whose soil quality is in a descending trend. The overall evaluation of Nemoro showed that 85% of greenbelts are medium in soil fertility, and 15% are infertile. In gener- al, the soil fertility in the researched zone is low. Through improvement and restoration, a part of soils relatively infertile or polluted can still be used for the greenbelt construction of Shanghai World Expostion zone.

关 键 词：土壤肥力 城市绿地 土壤质量 上海世博会 

分 类 号：S158.2[农业科学—土壤学]