Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (2): 417-424.DOI: 10.3969/j.issn.1004-1524.2023.02.19

• Environmental Science • Previous Articles     Next Articles

Effects of different soil amendments on safe production and iron and zinc contents of rice in cadmium and mercury compound polluted soil

WU Shaofu1(), NI Yuanjun2, ZHAN Lichuan2, PENG Lu3, WU Yingjie3,*()   

  1. 1. Shaoxing Grain and Oil Crop Technology Promotion Center, Shaoxing 312000, Zhejiang, China
    2. Shengzhou Agricultural Technology Extension Center, Shengzhou 312400, Zhejiang, China
    3. College of Resources, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2022-01-07 Online:2023-02-25 Published:2023-03-14
  • Contact: WU Yingjie

Abstract:

In this study, a randomized block experiment was performed in a cadmium (Cd)-mercury (Hg) compound polluted paddy field in Shaoxing City, Zhejiang Province, China. The treatment without application of soil amendments was selected as the control (CK), and the effects of different soil amendments on the safe production and iron (Fe), zinc (Zn) contents of rice were compared. It was shown that all the three soil amendments could significantly (P<0.05) decrease the contents of soil available Cd and Hg, and decrease the content of Cd and Hg in brown rice below the limitation of the national standard, thus guarantee the safe production of rice. Among the tested soil amendments, the self-developed soil amendments No. 2 could also significantly (P<0.05) increase Fe, Zn content in brown rice, which not only safeguards the rice production in the Cd-Hg compound polluted soil, but also enhances the nutritional quality of rice, and is the best choice under the experiment conditions.

Key words: soil amendments, rice, heavy metal, trace elements

CLC Number: