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Migration and Transformation of Cadmium in Rice - Soil Under Different Nitrogen Sources in Polymetallic Sulfide Mining Areas by Zhang, Xiaoxia; Zhang, Xuexia; Lv, Shuji; Shi, Lei; Wang, Rongping is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract We conducted pot experiments to assess the bioavailability of cadmium (Cd) in contaminated rhizosphere soil and accumulation in rice organs in response to nitrogen (N) supply ((NH~4~)~2~SO~4~, NH~4~NO~3~, NH~4~Cl). The results showed that the concentration of bioavailable Cd in rice rhizosphere soil was (NH~4~)~2~SO~4~ treatment > NH~4~Cl treatment > NH~4~NO~3~ treatment at the same level of N application and growth period; the Cd concentration in rice roots was (NH~4~)~2~SO~4~ treatment > NH~4~NO~3~ treatment > NH~4~Cl treatment; and the Cd concentration in rice straw was NH~4~NO~3~ treatment > NH~4~Cl. The Cd concentration in rice roots, straws, and seeds at the maturity stage was (NH~4~)~2~SO~4~ treatment > NH~4~Cl treatment. With the same N fertilizer, excessive N promoted Cd accumulation in rice at later growth stages. This suggested that sulfate (SO~4~^2−^) influenced Cd concentration in rice. NH~4~Cl application maintained a low Cd level in different rice organs with the same N level. This confirmed that NH~4~Cl is a safe N source for rice planting in polymetallic sulfide mining areas. The study concludes that appropriate NH~4~Cl levels for Cd-contaminated paddy

Who reads Migration and Transformation of Cadmium in Rice - Soil Under Different Nitrogen Sources in Polymetallic Sulfide Mining Areas?

Author

Zhang, Xiaoxia; Zhang, Xuexia; Lv, Shuji; Shi, Lei; Wang, Rongping

Publisher

Springer Science and Business Media LLC; London: Nature Publishing Group; [London]: Springer Nature; Nature Publishing Group; Society for Mining, Metallurgy and Exploration Inc.; Research Square; Springer Nature; Island Press (ISSN 2045-2322)

Published

2020

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)