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Position: Home > Articles > Effects of soil amendments and foliar selenium applications on soil cadmium immobilization and wheat accumulation Pedosphere 2023

Effects of soil amendments and foliar selenium applications on soil cadmium immobilization and wheat accumulation

作  者：
Qiqi Liu;Tianyi Wu;Qiugang Wu;Chen Zhang;Dingfeng Wu;L. Zhang;Jing Zhou;Huan Zhang;Jun Zho
单  位：
School of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003 (China); National Engineering and Technology Research Center for Red Soil Improvement, Red Soil Ecological Experiment Station, Chinese Academy of Sciences, Yingtan 335211 (China); University of Chinese Academy of Sciences, Beijing 100049 (China);Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Sino-Japan Friendship Center for Environmental Protection, Beijing 100029 (China);Jiangsu Design Institute of Geology for Mineral Resources, Xuzhou 221006 (China);School of Resources and Environment, Henan Institute of Science and Technology, Xinxiang 453003 (China); University of Chinese Academy of Sciences, Beijing 100049 (China
关键词：
applications;puxing5;mx;cd concentration;lime;ds
摘  要：
Wheat cadmium (Cd) contaminationis one of the environmental and agricultural concerns worldwide. Here, the effects of foliar selenium (Se) and soil amendments (lime, biofuel ash and sodium sulfide (DSO), iron mine tailing and alkali lignin (MX)) applications on the soil Cd fractions and wheat Cd accumulations were studied by incubation, greenhouse pot, and field plot experiments. The results showed that in soil incubation experiment, lime and MX applications significantly increased soil pH and DSO applications significantly decreased soil pH, while all the three amendments can significantly reduce the available Cd fractions by 16-21%. Foliar spraying can significantly increase the growth and yield of the high-Cd-accumulating-cultivar (Puxing5). In the greenhouse experiment, lime and MX applications considerably decreased grain Cd concentrations by 53-56% and 41-52% for Puxing5 and by 9-38% and 23-28% for Zhoumai30, respectively. In the field experiment, the Cd concentrations were significantly reduced by 67-69% and 69-74% in Puxing5 grain by lime and MX applications, respectively. DSO applications also significantly reduced Cd concentrations in grains by 56-59% for Puxing5 and by 22-27% for Zhoumai30 in the greenhouse experiment, but in contrast, increased Cd concentrations in field experiment by 20-23%. Our results implicate that the incubation and greenhouse experiments are necessary to be verified in the field and the foliar Se application is recommended when considered both the financial costs and production safety.

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