当前位置: 首页 > 文章 > 园林施用堆肥污泥后土壤中氮的淋滤和迁移行为研究 广东农业科学 2012,39 (14) 172-175
Position: Home > Articles > Effect of composting sludge on leaching and vertical migration characteristics of nitrogen from soil Guangdong Agricultural Sciences 2012,39 (14) 172-175

园林施用堆肥污泥后土壤中氮的淋滤和迁移行为研究

作  者:
黄游;陈玲;赵建夫
单  位:
同济大学污染控制与资源化研究国家重点实验室;苏州有色金属研究院有限公司
关键词:
堆肥污泥;土地利用;氮;迁移
摘  要:
采用模拟土柱试验的方法考察堆肥污泥中氨氮和硝氮的淋出和各形式氮(全氮、氨氮、硝氮)在土壤中的迁移特性。结果表明,土壤施加污泥后淋滤液中氨氮含量虽略高于对照组,但仍低于地表水Ⅲ级标准。淋滤液中硝氮浓度与对照处理相比差异不显著,对地下水的潜在影响较小。在历时6个月的试验中,深层土壤氨氮、硝氮、全氮的含量在对照组和混配土中差异不显著,说明这3种形式的氮在土壤深层未发生迁移。因此,合理控制污泥在园林绿化上的施用量可以节省化肥和改良土壤,当堆肥污泥施加比例为10%,即全氮浓度为2.39 g/kg时,不会对水环境造成氮污染。
译  名:
Effect of composting sludge on leaching and vertical migration characteristics of nitrogen from soil
作  者:
HUANG You1,CHEN Ling2,ZHAO Jian-fu2 (1.Suzhou Nonferrous Metals Research Institute Co.,Ltd.,Suzhou 215026,China; 2.State Key of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092,China)
关键词:
composting sludge;land application;nitrogen;migration
摘  要:
Batch experiments and soil column experiments were performed to study leaching and vertical migration characteristics of nitrogen from soil amended with sludge compost.Results showed that the application of sludge compost promoted the leaching of NH4+-N which still met Ⅲ-class criteria specified in the environmental quality standards for surface water.The concentration of NO3——N in leachate showed no differences between treatments and controls.NH4+-N,NO3——N,TN had not vertical migrated in soils during 6 months of the experiment.Therefore,water environment would not be polluted by nitrate when the application rate of sludge compost was below 10%.

相似文章

计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊