太湖疏浚底泥养分特征及园林应用研究

Nutrient characteristics and horticultural application of the sediment in Taihu Lake

疏浚后的底泥处置是港口、航道及湖泊治理中面临的问题之一。疏浚底泥具有陆地土壤的基本理化性质,富含植物生长所需的各种营养物质,可应用于园林绿化。为分析其可行性,选择太湖月亮湾疏浚底泥,分析了底泥p H、有机质含量、总氮、有效磷、速效钾、含水率、重金属Cu、Zn、Pb、Cd含量。结果表明:底泥含有丰富的氮、磷、钾元素等营养物质,且其他指标含量适中,因此月亮湾疏浚底泥作为景观园林用土是可行的;同时,太湖月亮湾的疏浚底泥未被重金属污染,可直接利用。

Sediment disposal after sediment dredging was one of daunting problems facing in channel regulation. Dredged sediment which is composed of upland soil enriched with nutritive organic matters could be used ashorticultural application. Sediment in Moon Bay of Taihu Lake was researched to analyze the feasibility of the technology. Indices including moisture content, p H, organic matter, soluble salt, TN, TP, TK and heavy metal were measured. Results show that general characteristics of the sediment are basically in accordance with the general characteristics of the soil. Sediment in the Moon Bay of Taihu Lake can be directly used for resourceful disposal since itwas not polluted.