期刊论文

中文

湖南生态科学学报

2095-7300

2022

9

2

19-26

10.3969/j.issn.2095-7300.2022.02.003

国家自然科学基金项目（42107444）； 湖南省2020高新技术产业科技创新引领计划项目（2020NK2021）；

本校为第一机构

【目的】研究SO42-在不同水分条件下对土壤镉（Cadmium,Cd）行为和土壤环境的影响。【方法】以紫泥田为研究对象,进行土壤培养试验,研究淹水条件与湿润条件下SO42-添加对土壤Cd的影响。【结果】淹水条件下土面水p H随试验进行而升高,而湿润条件下表现为先降后升的趋势;土面水p H随SO42-添加浓度的增加而降低。淹水处理土面水p H大于湿润处理（P＜0.05）。SO42-添加显著提高土面水Eh,且湿润处理Eh（-11.2 m V）显著高于淹水处理（-39.9 m V）。在两种水分管理模式下,淹水处理土壤可交换态Cd、可氧化态Cd和残渣态Cd显著低于湿润处理。SO42-添加可提高土壤可还原态Cd含量,降低可氧化态Cd含量,在淹水...

【Objective】The effects of SO42- addition on soil Cd behavior and soil environment under different water conditions were studied【Method】With purple paddy field as the research object,soil culture experiment was carried out to study the effect of SO42- addition on soil Cd under flooding and wetting conditions.【Result】The results showed that the soil surface water pH increased with the experiment in flooding condition,but decreased first and then increased in wet condition.The soil surface water pH decreased with the increase of SO42- concen...