期刊论文

Effect of straw removal from the paddy soil on accumulation of Cd adsorption in rice and human intake health risk assessment

中文

环境科学学报

0253-2468

2024

44

2

413-422

10.13671/j.hjkxxb.2023.0239

No.SKLMHM202209:国家环境保护重金属污染监测重点实验室开放基金项目 No.2021NK2027:湖南省重点研发计划项目

本校为第一机构

秸秆离田能增加稻田土壤中镉(Cd)的输出.本研究在2种不同Cd污染程度稻田开展田间试验,设置5种处理研究秸秆离田措施对水稻Cd吸收累积及稻米摄入人体健康风险的影响.研究结果表明:①相比与秸秆还田处理,秸秆离田处理提高了轻度和中重度Cd污染稻田土壤pH值0.13～0.58个单位,降低了秸秆分解的产酸作用,降低了土壤酸化效应;秸秆离田降低土壤有机质含量0.68％～19.48％,减少了有机质溶解带来的活性Cd可能.②秸秆离田处理显著影响轻度和中重度Cd污染稻田土壤Cd赋存形态,T1～T4处理使酸可提取态Cd占比分别降低0.74％～7.52％和5.70％～16.34％,残渣态Cd占比分别提升4.59％～14.40％和5.96％～18.49％;降...

Rice straw removal treatment can increase the output of cadmium(Cd)from the paddy soil.In this study,a field experiment was conducted in two different Cd pollution levels of paddy fields,and five straw removal treatments were set up to study the effects of straw removal treatments on Cd accumulation in rice and human intake health risks.The results of the experiment showed that:① Compared with straw leaving the field,in light and mid-heavy Cd-contaminated paddy fields,straw removal treatments increased soil pH value by 0.13～0.58 units,reduced...