Effects of Excavated Sediment From Dam Foundation Added With Sludge Compost on the Growth of Lolium perenne L.
During the construction of hydroelectric power stations,the large amount of sediment excavated from the dam foundation needs to be properly treated and disposed to minimize its impact on the surrounding environ-ment.To explore feasible treatment and utilization methods,this study conducted pot experiments of rye grass by adding sludge compost modified with two types of biochar to the sediment,with varying application rates(5%,15%,20%,and 30%).The results showed that the sludge compost increased the organic matter,nitrogen,phos-phorus,potassium,and their available forms in the sediment,significantly improving the growth conditions of Lo-lium perenne L..Particularly,the straw biochar had a more significant effect on the growth and development of Lolium perenne L.,which may be related to the chemical composition,structures,and nutritional properties of the two types of biochar.Furthermore,the growth of Lolium perenne L.did not increase proportionally with the in-creasing application rate of sludge compost.The optimal growth effect of Lolium perenne L.was observed when the application rate of sludge compost was 20%.In conclusion,the addition of sludge compost can effectively treat and utilize the sediment excavated from the dam foundation,providing new ideas and possibilities for subse-quent research and engineering practices in related fields,thus promoting sustainable development.
hydroelectric power stationsedimentsludge compostbiocharresource utilization
万方数据
维普
