›› 2019, Vol. 31 ›› Issue (6): 938-945.DOI: 10.3969/j.issn.1004-1524.2019.06.11

• Environmental Science • Previous Articles     Next Articles

Effects of atmospheric dust-fall pollution on growth and heavy metal contents of typical crops

SUO Chen, LUO Xiaosan*, ZHAO Zhen, SUN Xue, ZHANG Dan, CHEN Yan   

  1. Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Lab of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2019-01-23 Online:2019-06-25 Published:2019-06-26

Abstract: In order to investigate the influence of atmospheric dust-fall on the crop growth and product quality, the dust-fall collected from different sources was used to simulate the dust-fall deposition experiments with two typical crops under different concentrations. The photosynthetic and respiratory rates, chlorophyll content, biomass and heavy metal contents of aboveground parts of pakchoi (Brassica chinensis) and rice (Oryza sativa) seedling were analyzed. The results showed that atmospheric dust-fall significantly inhibited the photosynthetic rates of these crops, reduced the leaf chlorophyll contents, and enhanced the respiration rates, resulting in a decrease of dry weight of aboveground pakchoi and rice seedling by 11.8%-51.3 % and 12.7%-35.5%, respectively. Atmospheric dust-fall significantly increased the contents of some heavy metals accumulated in pakchoi and rise seedling, and eventually worsened the crop quality.

Key words: atmospheric dust-fall, vegetable, rice, heavy metal pollution, agricultural product safety

CLC Number: