Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (11): 2613-2619.DOI: 10.1016/S2095-3119(15)61320-X

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  • 收稿日期:2015-09-21 出版日期:2016-11-04 发布日期:2016-11-04

Application of iron and silicon fertilizers reduces arsenic accumulation by two Ipomoea aquatica varities

YU Tian-hong1*, PENG Yang-yang1*, LIN Chu-xia2, QIN Jun-hao1, 2, LI Hua-shou1   

  1. 1 Key Laboratory of Tropical Agro-Environment, Ministry of Agriculture/South China Agricultural University, Guangzhou 510642, P.R.China
    2 School of Environment and Life Science, University of Salford, Salford  M5 4WT, United Kingdom
  • Received:2015-09-21 Online:2016-11-04 Published:2016-11-04
  • Contact: LI Hua-shou, Tel: +86-20-85280211, E-mail: lihuashou@scau.edu.cn
  • About author:YU Tian-hong, E-mail: 1178194123@qq.com; PENG Yang-yang, E-mail: 89422726@qq.com;
  • Supported by:

    This work was financially supported by the National High-Tech R&D Program of China (863 Program, 2013AA102402), the National Natural Science Foundation of China (41271469), and the Science & Technology Planning Project of Guangdong Province, China (2013B020303001, 2015A020208012).

Abstract:     A 45 d pot experiment was conducted to examine the effects of silicon fertilizer or iron fertilizer on the growth of two typical Ipomoea aquatica cultivars (Daye and Liuye) and arsenic (As) accumuation of Daye and Liuye grown in As-contaminated soils at different As dosage levels. The results showed that the application of these two fertilizers generally enhanced the growth of the plants, which may be partly attributable to the reduction in As toxicity. The addition of these two fertilizers also significantly reduced the uptake of As by the plants though the iron fertilizer was more effective, as compared to the silicon fertilizer. The accumulation of As in shoot portion was weaker for Daye than for Liuye. The research findings obtained from this study have implications for developing cost-effective management strategies to minimize human health impacts from consumption of As-containing I. aquatica.

Key words: arsenic ,  silicon fertilizer ,  iron fertilizer ,  arsenic species ,  I. aquatica