Wheat grain Cd concentration and uptake as affected by timing of fertilizer N application

作者：Li, Xianglan; Ziadi, Noura^*; Belanger, Gilles; Yuan, Wenping; Liang, Shunlin; Xu, Hua; Cai, Zucong

来源：Canadian Journal of Soil Science, 2013, 93(2): 219-222.

DOI：10.4141/CJSS2012-041

• Cadmium
• nitrogen fertilizer
• fertilization management
• Triticum aestivum L.

The effect of a single N application (120 kg ha(-1)) at seeding on wheat (Triticum aestivtmi 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 mu g 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.

• 出版日期2013-5
• 单位土壤与农业可持续发展国家重点实验室; 北京师范大学; 中国科学院; 南京师范大学