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以合肥市典型道路、公园和庭院绿地土壤为对象,测定分析了绿地土壤理化性状和氮磷有效性特点。结果表明,绿地表层土壤容重平均值为1.45g/cm3,总孔隙度为43.6%;土壤电导率平均值为159μS/cm;pH值多在7.5～8.5,碱性化明显。老城区土壤氮磷有效性显著高于政务新区,老城区表层土壤全氮和速效氮含量的平均值分别为1.38g/kg和4.52mg/kg,高出政务区18.9%和42.1%;全磷和速效磷分别为1009.3mg/kg和41.9mg/kg,分别是政务区的3.0和1.9倍。园林绿地土壤具明显的富磷特征。
Taking Hefei typical road, park and garden greenbelt as object, the physical and chemical characters and the efficiency of nitrogen and phosphorus of the greenbelt were measured and analyzed. The results showed that the average bulk density of green surface soil was 1.45g / cm3 and the total porosity was 43.6%. The average soil conductivity was 159μS / cm. The pH was 7.5-8.5. The alkalization was obvious. The availability of N and P in the soil of the old urban area was significantly higher than that of the new government area. The average contents of total nitrogen and available nitrogen in surface soil were 1.38g / kg and 4.52mg / kg, respectively, 18.9% and 42.1% And available phosphorus were 1009.3mg / kg and 41.9mg / kg, respectively, 3.0 and 1.9 times the administrative district. Landscaping soil with obvious phosphorus-rich features.