施用堆肥污泥对土壤肥力及植物生长的影响
Effects of the Application of Composted Sewage Sludge on Soil Fertility and Plant Growth
查看参考文献36篇
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文摘
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土地利用有望成为市政污泥处置的主要途径。本研究以好氧堆肥的市政污泥为研究对象,通过田间试验,设置不同堆肥污泥施用量:0%、30%、50%、70%、100%(堆肥污泥与土壤体积配比),研究堆肥污泥施用对土壤肥力、植物生长以及土壤重金属含量的影响。结果表明:堆肥污泥施用未造成土壤酸碱化,土壤肥力等级由三级一般土壤提升为二级肥沃土壤,土壤主要营养组分含量随污泥施用量的增加均显著提高,其中堆肥污泥添加比例为50%时土壤有机质增加1.9倍、碱解氮增加3.0倍、有效磷增加9.5倍、速效钾增加3.7倍。堆肥污泥添加比例为50%时木春菊组长势最好,添加比例为30%时鼠尾草组和高羊茅&黑麦草组长势最佳,但是不同添加比例下早樱组生长并无显著差异。尽管施用堆肥污泥会导致试验区土壤重金属含量略有升高,但远低于《城镇污水处理厂污泥处置林地用泥质》(CJ/T 362-2011)所规定的污染物指标及其限值,未造成土壤重金属污染。本研究将为堆肥污泥的土地利用提供理论依据和数据支撑。 |
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其他语种文摘
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The land use is expected to be the main disposal way of municipal sludge.The field experiment was set with different application amounts of aerobic compost of municipal sewage including 0%,30%,50%,70%,100% (the volume ratio of composted sewage sludge to soil) to explore the effects of composted sewage sludge application on soil fertility,plant growth and soil heavy metals contents.The results showed that the application of composted sewage sludge did not cause soil acidification,and the level of soil fertility was improved from tertiary level to the secondary one.The contents of main nutrient components in soil increased significantly with the increase in sewage sludge compost application.When the addition proportion of composted sewage sludge was 50%,1.9 times of organic matter,3.0 times of alkali-hydrolyzed nitrogen,9.5 times of available phosphorus and 3.7 times of available potassium were observed compared with the control.The growth rate of Argyranthemum frutescens (Linn.) Sch.-Bip was the highest when the addition proportion of composted sewage sludge was 50%,and that of Salvia japonica Thunb.and Festuca elata Keng ex E.Alexeev & Lolium perenne Linn.were 30% with best growth.However,there was no significant difference of the growth of Cerasus subhirtella (Miq.) Sok.with different addition proportion.Although the application of composted sewage sludge would lead to a slight increase in soil heavy metals content,it was far below than the pollutant index and limit value stipulated in"Disposal of sludge from municipal wastewater treatment plant-Quality of sludge used in forestland" (CJ/T362-2011),and did not cause soil heavy metals pollution.This study will provide a theoretical basis and data support for the land utilization of composted sewage sludge. |
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来源
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地球与环境
,2024,52(1):53-64 【核心库】
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DOI
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10.14050/j.cnki.1672-9250.2023.51.008
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关键词
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堆肥污泥
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土壤改良
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土壤肥力
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植物生长
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地址
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1.
贵州筑信水务环境产业有限公司, 贵阳, 550081
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国投信开水环境投资有限公司, 北京, 101101
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550081
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-9250 |
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学科
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行业污染、废物处理与综合利用 |
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基金
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贵州省项目
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中国科学院战略性先导科技专项
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中央引导地方科技发展资金项目
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文献收藏号
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CSCD:7689145
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