Impacts of Nitrogen (Urea) Fertilization on Cadmium Accumulation Nitrate Contents and Nutritive Values in Chinese Cabbage


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Pot-mode cultivation experiments were carried out to study the impacts of nitrogen(urea)fertilization in different level on Cadmium (Cd) accumulation, nitrate contents and nutritive values in Chinese cabbage, The results showed that: at different level of Cd artificial enriched soil, with applied urea increased, the accumulation of Cd in edible part of Chinese cabbage gradually decreased. Nitrate Contents in edible part have a positive correlation with the concentration of Cd in soil and the nitrogen fertilizer applied. In the natural soil (with contaminated Cd in concentration of 0.18 mg/kg), when the urea was fertilized by 255 kg/hm2 to 330 kg/hm2, Cd and nitrate contents of edible parts of cabbage were within the national food security limits, which could guarantee the food security of Chinese cabbage. Increasing nitrogen fertilization in the form of urea has a certain effect on amino acids contents but little effect on soluble sugar contents in Chinese cabbage, when the concentration of urea was 320 kg/hm2, amino acids contents of cabbage reached the highest level of 355 mg/kg1. Increasing nitrogen fertilization could lower down the contents of water-soluble Cd and the available Cd in soil, thereby reduce the absorption of Cd by Chinese cabbage. To a certain extent, increasing nitrogen fertilization could increase the food security of Chinese cabbage.



Advanced Materials Research (Volumes 393-395)

Edited by:

Ran Chen and Wen-Pei Sung




L. Zhao et al., "Impacts of Nitrogen (Urea) Fertilization on Cadmium Accumulation Nitrate Contents and Nutritive Values in Chinese Cabbage", Advanced Materials Research, Vols. 393-395, pp. 809-817, 2012

Online since:

November 2011




[1] YANG Mao, WANG Huo-yan , ZHOU Jian-min. Efects of Appling Nitrogen Fertilizers on Transformation of External Cadmium in the Paddy Soil with Different Soil Moisture, Journal of Agro Environment Science [J], 2006, 25(5): 1202-1207.

[2] LI Bing, WANG Chang-quan1, DAI Tian-fei, Accumulation of heavy metals in rice seeds as influenced by metal speciation and soil properties, Plant Nutrition and Fertilizer Science [J], 2007, 13(4): 602-61.

[3] Susan Tandy, Karin Bossart, Roland Mueller, Extraction of Heavy Metals from Soils Using Biodegradable Chelating Agents, Environ. Sci. Technol [J], 2004, 38: 937-944.


[4] Gemma Rauret, Extraction procedures for the determination of heavy metals incontaminated soil and sediment, Talanta [J], 1998, 46: 449-455.


[5] WANG Ji-qing, RU Shu-hua, SU De-chun, Effects of Nitrogenous Fertilizers and Chelators on Absorption of Cadmium by Indian Mustard and Oilseed Rape, Journal of Agro-Environment Science [J], 2004, 23(4): 625-629.

[6] SHENG Yun-gang, Modern plant physiology experiments Guide [M], Beijing: Science press, (1999).

[7] GAO Jun-feng, Plant physiology experiments Guide [M], Beijing: High education press, (2006).

[8] WEI Cheng-xi. ZHANG Xu, Effects of zinc lead and cadmium contamination on nitrate contents in pakchoi, Journal of Southwest Agricultural University (Natural Science) [J], 2005, 27(4): 436-438.

[9] LI Hui-he, WANG Zheng-yin, Influence and assessment of nitrogen rates on nitrate content and nutrient quality ot Chinese cabbage (B.Chinensis L.), Soils and Fertilizers Sciences in China [J], 2007(4): 53-55.