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摘要：植物造景是校园建设中的亮点，长久耐看的植物群落和舒适怡人的景观效果是人们追求的目标。而绿地土壤作为生态系统中最重要的组成部分，对文持良好的自然环境起到了重要作用。它既是文系生物生存的物质基础，又关系着生态环境质量，直接影响了绿化效果。通过采集本校园内海棠园不同深度的土壤，对其理化性状进行调查和测定，结果表明：海棠园土壤属于砂壤土，土壤颗粒比例不均衡，砂粒含量较高，导致土壤性质接近砂土，缺乏养分；土壤以微碱性为主，盐分含量过高，且已出现盐渍化，这些状况与校区地理位置和上海土壤改良的工程有关；土壤中自然含水量偏低，土壤容重偏高，土壤孔隙度偏低，有紧实现象，这是受到砂土质地和土壤结构被破坏所影响。依据上述结果，提出了有关土壤改良和绿化种植的措施和建议。24621
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毕业论文关键词：绿地土壤；理化性状；土壤改良；绿化种植
Investigation and Improvement on Soil of M. halliana Garden in Shanghai Institute of Technology
Abstract: Planting design is the highlight of campus construction, with fascinating plant community as well as comfortable and pleasant visual effect, which are what people pursue. As the most important part of the ecosystem, greenbelt soil plays an important role in maintaining a healthy natural environment. It is the material basis for the maintenance of biological survival, and the eco-environmental quality directly affects a greening effect. Through collecting soil samples with different depth of begonia soil layer in campus, the author carries out a research on the physical and chemical properties of soil. The results indicate that soil of M. halliana Garden belongings to sandy loam soil. Due to imbalanced soil particle proportion, especially for high sand content, led to soil nature close to sand, lack of nutrient. The value of soil pH of green belts is slightly alkalescent, with salinization caused by high salt content, which are attributed to the geographical position of campus and the soil improvement works in Shanghai. The soil natural moisture is partial low, with high soil bulk density, low soil porosity and hardening phenomenon, all of which are influenced by the soil texture and damaged soil structure. Based on these results mentioned above, some measures and suggestions were put forward including soil improvement and greening cultivation for soil management.
Key words: greenbelt soil；physical and chemical properties；soil improvement；greening cultivation
目 录
引言 1
一、立地概况 2
（一）地理位置 2
（二）土壤形成情况 2
二、材料与方法 3
（一）调查时间及地点 3
（二）试验土样 3
（三）土壤样品的采集及处理 4
1、土壤样品的采集 4
2、土壤样品的处理 4
（四）试验测定项目与方法 4
1、土壤颗粒分析的测定 5
2、土壤含盐量的测定 5
3、土壤酸碱度的测定 5
4、土壤自然含水量的测定 5
5、土壤容重的测定 5
6、土壤孔隙度的测定 5
7、土壤饱和持水量的测定 6
（五）数据分析方法 6
三、结果与分析 6
（一）土壤颗粒组成 8
（二）土壤物理性质 8
1、土壤水分 8
2、土壤容重与土壤孔隙 10
（三）土壤化学性质 11
1、土壤酸碱性 11