摘要:土壤是植物生存所必须的环境,土壤质量的高低决定了植物的生长状况。土壤质量是土壤肥力质量、土壤环境质量和土壤健康质量三者集成的。本文主要是校园土壤质量评价,为了了解土壤的基本特性,通过分析土壤的理化性质的相关指标,包括pH、EC值、有机质含量、速效氮、磷、钾以及全氮、磷、钾;以及测定了土壤中四种重金属(铜、锌、铅、镍)的含量,利用spss,origin软件对其进行描述性统计分析,得出校园土壤的质量指标,为校园土壤质量的改善以及持续性利用提供参考。38486 毕业论文关键字:土壤质量:理化性质:重金属:评价
The investigation and assessment of the soil environment quality in the campus of
Abstract: Soil is the necessary survival environment for the plants. Plants growth condition depends on soil quality. soil quality consist of soil fertility quality, soil environmental quality and soil health quality. In this paper , the assessment of the campus soil quality was the main objective. In order to understand the basic properties of the soil, the related indexes of physical-chemical properties of soils were analyzed. The pH, EC, organic matter, available nitrogen, available phosphorus, available potassium and total nitrogen, total phosphorus, total potassium of the campus soil were examined. The contents of four heavy metals (Cu、Zn、Pb、Ni) of the soil were investigated. The descriptive statistical analysis of campus soil using spss and origin were carried out. Consequently, the campus soil quality was discussed and assessed, which can provide the reference for modification of soil quality and the sustainable application.
Key words: Soil quality:Soil quality assessment:Physical-chemical properties of soils:Heavy metal
目 录
1绪论 1
1.1 土壤与土壤质量 1
1.2 课题背景及研究目的 2
1.3 国内外研究进展 2
1.4 国内实例研究 3
1.5 土壤对植物生长的影响 4
1.6 本研究的目的及意义 5
第二章 实验研究 6
2.1 试验药品 6
2.2 试验仪器和设备 6
2.3 试验样品来源 7
第三章 校园土壤理化性质测定试验 8
3.1 土壤有机质测定 8
3.2 土壤pH和电导率测定 8
3.3 土壤氮、磷、钾的测定 9
3.3.1 土壤速效氮的测定 9
3.3.2 土壤速效磷的测定 10
3.3.3 土壤速效钾的测定 11
3.3.4 土壤全氮的测定 12
3.3.5土壤全磷的测定 13
3.3.6土壤全钾的测定 14
3.4 本章小结 14
第四章 土壤重金属实验 15
4.1 铜、锌的测定 15
4.2 铅、镍的测定 16
4.3 本章小节 17
第五章 总结与期望 18
5.1 总结 18
5.2 展望 18
致 谢 19
参考文献 20