期刊论文

Migration characteristics and its differences of reclaimed water salinity in different subtropical soils

Wang, H.

中文

农业工程学报

1002-6819

2018

34

20

99-107

10.11975/j.issn.1002-6819.2018.20.013

41471185:国家自然科学基金 15A084:湖南省教育厅科学研究重点项目 2016JC2032:湖南省重点研发计划项目 CX2017B363:湖南省研究生科研创新项目

本校为第一且通讯机构

为了合理评价再生水灌溉盐分对土壤环境的影响,分析盐溶液淋溶亚热带土壤流出液盐分变化规律及其对土壤化学性质的影响差异,该文采用定水头入渗法,模拟不同浓度钠盐溶液淋溶黏性潮土、沙性潮土、红壤、紫色土、水稻土等5种亚热带地区土壤,并观测土壤流出液电导率(EC)和pH值的差异。试验结果表明:1)高浓度盐溶液对黏粒含量较高的红壤、紫色土、黏性潮土的穿透能力弱于黏粒含量较低的水稻土和沙性潮土。同等浓度水平处理达到相同的穿透程度,酸性土壤(红壤、紫色土、水稻土)能承受更多的低质水量。2)盐分在土壤中的迁移速度主要由土壤理化性质决定,土壤黏粒含量、交换性铝含量会显著减缓盐分在土壤...

To evaluate reasonably the effect of reclaimed water irrigation salt in the soil environment, varying salinity in the effluent of salty solution leaching subtropical soil and the effect on soil chemical properties were analyzed. In this paper, five subtropical soils: clay fluvo aquic soil, sandy fluvo aquic soil, red soil, purple soil and paddy soil were selected as the research object. Use the constant head infiltration method to observe the differences in electrical conductivity (EC) and pH of effluent after leaching of soils with different c...