期刊论文

Effects of Water Management on Soil Properties and Cd Behavior of Typical Paddy Soils

Long, Jian(longjiancsuft@yeah.net);Peng, Pei-Qin(pqpeng123@sina.com)

中文

环境科学

0250-3301

2020

41

7

3418-3425

10.13227/j.hjkx.201911258

2015BAD05B02:国家科技支撑计划 0201606:财政部重大专项 2019JJ50995:湖南省自然科学基金 2006180:湖南省重点学科建设项目

本校为第一且通讯机构

为探明不同母质发育稻田土壤Cd环境行为对水分管理模式变化的响应差异,通过不同的水分管理模式(长期淹水、湿润灌溉和干湿交替), 在3种外源Cd水平下(0.5、2.0和5.0 mg·kg ~(- 1)), 对2种母质发育稻田土壤(黄泥田和麻砂泥)进行培养试验,分析了土壤氧化还原电位(Eh值) 、pH值、土壤溶液Cd含量及土壤Cd赋存形态等指标.结果表明,不同母质发育土壤pH值和Eh值对水分管理模式变化的响应存在差异,土壤pH值变化率分别为长期淹水: - 2.61% (黄泥田)和2.25% (麻砂泥), 干湿交替: - 1.96%(黄泥田)和0.52%(麻砂泥), 湿润灌溉: - 4.08%(黄泥田)和- 0.52%(麻砂泥), 2种母质土壤Eh值与pH值呈极显著负相关; 2种母...

To explore the effects of water management mode on Cd environmental behavior in different parent-material-developed paddy soils, two parent-material-developed paddy soils (yellow clayey soil and granitic sandy soil) under three exogenous Cd levels (0.5, 2.0, and 5.0 mg•kg-1) with different water management modes (long-term flooding, moistening irrigation, and wet-dry rotation) were cultured in this study. The soil redox potential (Eh value), pH value, Cd concentration in soil solution, and Cd fractionation were also determined. The results sho...