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为了解上海浦东三林地区主要绿地的土壤质量,分别采集了行道树、居住区、公园等绿地土壤28个样本进行了土壤理化性质及养分状况的测试与统计分析。结果表明:土壤p H总体呈弱碱性到强碱性,以碱性为主,土壤无盐分积累,但低于正常值的土壤也占50%,土壤质地稍偏黏性,环林路黏性大,土壤整体较紧实和很紧实,通气性和保水性均不佳;行道树土壤有机质严重匮乏,土壤有效磷总含量不高但不缺磷,土壤速效钾含量丰富;行道树绿地土壤总体质量比居住区和公园差。降低土壤碱性,提高有机质,改善土壤通气性和保水力是土壤改良的重点。
In order to understand the soil quality of the main greenbelt in Sanlin, Pudong, Shanghai, twenty-eight samples of greenbelt in pavement trees, residential areas and parks were collected for testing and statistical analysis of soil physical and chemical properties and nutrient status. The results showed that soil p H was weak alkaline to alkaline, and alkalinity was the main part. Soil had no salt accumulation, but the soil below normal also accounted for 50%. Soil texture was slightly sticky. The soil is compact and solid as a whole, the aeration and water retention are poor; the organic matter in the pavement tree is in a serious shortage, the total available phosphorus in the soil is not high but the phosphorus is not deficient, and the soil available potassium is abundant; Quality is worse than in residential areas and parks. Reduce alkaline soil, improve organic matter, improve soil aeration and water retention is the focus of soil improvement.