Journal
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B
Volume 18, Issue 10, Pages 897-905Publisher
ZHEJIANG UNIV
DOI: 10.1631/jzus.B1600272
Keywords
Fertilization method; Cadmium (Cd); Nitrogen (N); Nutritional quality
Categories
Funding
- National Key Research and Development Project of China [2016YFD0200103]
- National Natural Science Foundation of China [31622051, 31670258]
- Zhejiang Provincial Natural Science Foundation of China [LR13C130001]
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Cadmium (Cd) contamination in soil is an increasingly serious problem. Management of plant nutrients has been proposed as a potentially promising strategy for minimizing Cd accumulation in crops grown in contaminated soil. This study investigated the effects of split applications of nitrogen (N) fertilizers on the Cd concentration in Chinese cabbage (Brassica chinensis L.) plants grown in Cd-contaminated soil. Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts. However, when nitrate was used as the N fertilizer, there were no significant differences between the split and single applications for the same parameters. We conclude that a split application could be more beneficial than a single application method when ammonium or urea is used as the N fertilizer for vegetable cultivation in Cd-contaminated soil.
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