论文部分内容阅读
开展底泥质耕作层土壤的构建方法研究,是确保土地整治工程质量和效益的重要举措。该研究以河流疏浚底泥土地利用为主线,从底泥质耕作层土壤构建方法的基础理论、底泥环境肥力调查评价、底泥重金属稳定化修复、底泥改造土壤工程及底泥应用案例等方面系统地探讨了土地整治工程中底泥质耕作层土壤构建方法的基础、内容、设计方法、施工工艺、工程参数。污染底泥修复后大田种植空心菜试验表明:重金属含量可达到无公害蔬菜安全标准、Cd降低率在38.61%~85.69%,稳定化修复明显降低蔬菜重金属含量;底泥质耕层土壤适宜开展种植,可提蔬菜高产量8.7%~13%,增加土壤有机质含量0.95~2.18倍。
Carrying out research on the construction methods of bottom muddy tillage layer soil is an important measure to ensure the quality and benefit of land remediation project. In this study, the basic theory of soil construction method of bottom muddy tillage soil, survey and evaluation of environmental fertility of sediment, stabilization and remediation of heavy metals in sediment, soil engineering of bottom mud and application of sediment This paper systematically explores the foundation, content, design method, construction technology and engineering parameters of the method of soil construction of bottom muddy tillage in the land remediation project. The results showed that the content of heavy metals could reach the safety standard of pollution-free vegetables, the rate of Cd reduction was between 38.61% and 85.69%, and the stabilization and remediation could significantly reduce the content of heavy metals in vegetables. The soil of bottom muddy tillage was suitable for planting, High yield of vegetables can be mentioned 8.7% ~ 13%, increase soil organic matter content of 0.95 ~ 2.18 times.