| 苜蓿施用污泥效果的研究Ⅱ对土壤理化性质及元素含量的影响 |
| |
| 引用本文： | 付华,王玉梅,周志宇,张洪荣,李雪瑞,左秀娟.苜蓿施用污泥效果的研究Ⅱ对土壤理化性质及元素含量的影响[J].草业学报,2002,11(4):57-61. |
| |
| 作者姓名： | 付华 王玉梅 周志宇 张洪荣 李雪瑞 左秀娟 |
| |
| 作者单位： | 1. 兰州大学草地农业科技学院,甘肃草原生态研究所,兰州,730020
2. 甘肃省水利综合经营办公室,兰州,730000 |
| |
| 基金项目： | 甘肃省自然科学基金 (ZR- 95- 65)和省科委、市科委科技项目资助。 |
| |
| 摘 要： | 将兰州市七里河污水处理厂生活污泥施用于苜蓿人工草地，探讨其对土壤环境的影响，结果表明，施用污泥，改善了土壤理化性质，增加了土壤肥力，土壤中有机质，全N和全P的含量增加，土壤容重下降，污泥施用量与土壤有机质，全氮含量呈极显著正相关（P＜0．01），与土壤容得呈极显著负相关（P＜0．01），当污泥施用量在4kg/m^2以上时，0－20cm土层Fe和Ca的含量显著增加，施用量8kg/m^2时，Cu和Zn的含量显著高于对照，而K，Mn和重金属元素Ni,Pb,As,Hg的含量与对照无显著差异，且各元素都未向土壤下层迁移，没有对土壤环境造成污染。
|
| 关 键 词： | 苜蓿 理化性质 元素含量 土壤 施用效果 |
| 文章编号： | 1004-5759(2002)04-0057-05 |
| 修稿时间： | 2001年12月21日 |
Studies on effects of application of sewage sludge on alfalfa Ⅱ. Effects on physical and chemical character, element accumulation of the soil |
| |
| FU Hua,WANG Yu-mei,ZHOU Zhi-yu,ZHANG Hong-rong,LI Xue-rui,ZUO Xiu-juan.Studies on effects of application of sewage sludge on alfalfa Ⅱ. Effects on physical and chemical character, element accumulation of the soil[J].Acta Prataculturae Sinica,2002,11(4):57-61. |
| |
| Authors: | FU Hua WANG Yu-mei ZHOU Zhi-yu ZHANG Hong-rong LI Xue-rui ZUO Xiu-juan |
| |
| Abstract: | Sewage sludge collected from Qilihe Sewage Treatment Factory, Lanzhou, China, was applied to artificial grassland sown with Medicago sativa L. cv. Xingjiang Daye, and effects of sewage sludge on the soil environment were investigated. The results showed that application of sewage sludge improved the physical and chemical characters of the soil--the contents of organic matter, total N and P were increased; unit weight was decreased. While the application dosage of sewage sludge was in the range of 4~8 kg/m2, the contents of Fe, Ca, Cu and Zn were increased significantly, and the contents of K, Mn and heavy metal element of Ni, Pb, As and Hg in soils of 0~20 cm depth were no significant difference compared with that of the control. Also, the above elements had not moved into the lower layer of the soil and the application of sewage sludge did not cause the pollution of the soil environment. |
| |
| Keywords: | sewage sludge alfalfa soil element |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
