Abstract: Sewage sludge from Qilihe sewage treatment factory,Lanzhou China,was applied for the study of the growth and element content of Lolium perenne L.by use of different quantity level in comparison with chemical fertilizer.The results showed that when the application quantity of sewage sludge was in the range of 0.5～8kg/m²,the coverage,density,biomass of aboveground and underground of Lolium perenne L.were increased,and the chlorophyll content was increased significantly with the increase of application quantity of sewage sludge.The contents of N, P,Mg,K,Fe,Zn and Cu were increased,but Mn content was decreased,and the contents of Ca and heavy metal elements of Hg,Ni,Pb,As in aboveground biomass of that grass were no significant difference when compared with that of the control treatment.The heavy metal elements contents in he aboveground biomass were not more than the average concentration in whole plant,so the application of sewage sludge did not cause the injury on Lolium perenne L.

Key words: Lolium perenne L, Sewage sludge, Growth, Element

摘要： 将兰州市七里河污水处理厂的生活污泥施用于多年生黑麦草,藉以探讨施用量对黑麦草生长及其元素含量的影响。结果表明,随着污泥施用量(0.5～8kg/m²)的增加,黑麦草盖度,密度,地上、地下生物量以及叶绿素含量显著增加。施用后黑麦草地上部组织中N、P、K、Mg、Fe、Zn和Cu的含量增加,Mn含量减少,Ca和重金属元素Hg、Ni、Pb、As含量与对照间差异不显著,没有对黑麦草造成重金属毒害。

关键词: 黑麦草, 污泥, 生长, 元素