【摘要】 为了给土壤改良治理提供数据支撑,笔者采用环刀法测定杨浦区公园和道路绿地的土壤物理性质,使用便携式土壤水分测量仪测定电导率,使用便携式渗透仪现场观测土壤导水率。结果表明:杨浦区土壤电导率略高于标准值0.05 mS/cm3,土壤通气性不良,土壤非毛管孔隙度比城市园林绿化种植要求低5.88%。道路绿地土壤容重比标准高0.03 g/cm3、土壤总孔隙度比城市园林绿化种植最理想的标准低2.42%,公园绿地符合标准。道路绿地土壤含水量与持水能力均显著低于公园绿地。最后提出,应从以下几个方面入手改良土壤质量:及时翻松地表土壤,通过堆积树皮、凋落叶增大土壤中腐殖质含量,降低土壤紧实度;加强日常养护管理,防止人为因素的破坏干扰;植物绿化种植过程中,从使植物群落结构丰富多样等。更多还原

【Abstract】 The paper aims to provide data support for soil improvement and management. The author measured the soil physical properties of park and road green space in Yangpu district, Shanghai by cutting ring method,the electrical conductivity by portable soil moisture meter, and the soil hydraulic by portable osmotic apparatus. The results showed that: the soil conductivity of Yangpu district was slightly higher than the standard value of 0.05 mS/cm3, and the soil aeration was poor, the soil non-capillary porosity was 5.88% lower than the requirement of urban landscape planting; the soil bulk density of road green was 0.03 g/cm3 higher than the standard, the total soil porosity was 2.42% lower than the ideal standard of urban landscape planting,and the park green space complied with a standard; the soil water content and water holding capacity of road green space were significantly lower than those of park green space. Loosening the surface soil in time,increasing the humus content in the soil by accumulating bark and litter to reduce the soil compaction, and strengthening the daily maintenance and management to prevent the disturbance of the destruction of manmade factor, during the plant greening planting process, we can improve the soil quality from the aspect of enriching the plant community structure.更多还原