当前位置： 首页»科研成果» 2013 Wheat grain Cd concentration and uptake as affected by timing of fertilizer N application 李香兰、梁顺林

 

Xianglan Li¹, Noura Ziadi^2,7, Gilles Bélanger², Wenping Yuan¹, Shunlin Liang^1,3,4, Hua Xu⁵, and Zucong Cai⁶

 

¹College of Global Change and Earth System Science, Beijing Normal University, Beijing, China 100875;

²Agriculture and Agri-Food Canada, Soils and Crops Research and Development Centre, 2560 Hochelaga Blvd, Québec City, QC, Canada G1V 2J3;

³State Key Laboratory of Remote Sensing Science, Jointly Sponsored by

Beijing Normal University and Institute of Remote Sensing Applications, CAS, China;

⁴Department of Geography, University of Maryland, College Park, MD 20742, USA;

⁵State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71st East Beijing Road, Nanjing, China 210008;

 

⁶The College of Geography Science, Nanjing Normal University, Nanjing, China 210097.

 

ABSTRACT

The effect of a single N application (120 kg ha−1) at seeding on wheat (Triticum aestivum L.) grain Cd concentration and uptake was compared with an equally split N application (seeding and the stem elongation stage) in a field experiment at 12 site-years. Averaged across all site-years, the single N application tended to reduce wheat grain Cd concentration (58 vs. 68 µg kg−1 DM) and uptake (151 vs. 191 mg ha−1) compared with the split application. The Cd concentrations, however, never exceeded the maximum acceptable level for Cd in wheat grain. A single N application at seeding might reduce the risk of high grain Cd concentration in spring wheat.

 

KEY WORDS: Cadmium, nitrogen fertilizer, fertilization management, Triticum aestivum L

 

PUBLISHED IN: CANADIAN JOURNAL OF SOIL SCIENCE, 2013, 93 (2): 219-222.

 

SOURCE: http://pubs.aic.ca/doi/abs/10.4141/cjss2012-041