Effects of microplastics, fomesafen and their combination on the growth of maize seedlings

doi:10.14088/j.cnki.issn0439-8114.2022.12.002

Abstract

Abstract: In this study, maize was selected as the research object to explore the effects of single pollution and combined pollution of polyvinyl chloride microplastic（PVC） and fluorosulfen on the growth characteristics of maize seedlings. The results showed that,in the single PVC treatment group, the low concentration of PVC（540 mg/kg） had no significant effect on the plant height and root length of maize seedlings; but the plant height and root length of maize seedlings treated with middle concentration PVC（1 620、2 700 mg/kg） were significantly lower than those of the control group,and the plant height and root length of maize seedlings treated with high concentration PVC（5 400 mg/kg） were significantly different from those of the control group. In the single treatment exposure group, the plant height and root length of maize decreased significantly with the increase of fomesafen concentration. In the combined pollution group, compared with the single pollutant stress, the combined effect of PVC and fomesafen on the growth of maize seedlings showed a synergistic effect, and the combined group had a greater inhibitory effect on the growth of maize seedlings. Single PVC had no significant effect on the chlorophyll a content of maize in the experimental concentration range, but single fomesafen could significantly reduce the chlorophyll content. There was no significant difference in corn chlorophyll content between the combined pollution group and the single pesticide group. The results can provide a reference for ecological risk assessment and rational use of plastic film in the field.

Key words: microplastics, fomesafen, corn, growth characteristics

CLC Number:

S513

CUI Ning, GUO Zhan-bin, LIU Jing. Effects of microplastics, fomesafen and their combination on the growth of maize seedlings[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(12): 8-12.

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