农业环境科学学报2025，Vol.44Issue(6)：1458-1466,9.DOI:10.11654/jaes.2024-0693
叶面喷施纳米氧化钙对香菜和菠菜镉富集及生理特性的影响
Effects of foliar spraying calcium oxide nanoparticles on cadmium accumulation and physiological response in coriander and spinach under cadmium stress
摘要
Abstract
To safeguard food security,this research conducted field trials to investigate the impact of foliar applications of three different concentrations(25,100,400 mg·L-1)of nano-calcium oxide(CaONPs)on Cd uptake and the physiological attributes of coriander and spinach in soils contaminated with Cd(0.526 mg·kg-1).The findings revealed that foliar sprays of varying concentrations of CaONPs significantly decreased the Cd content in the above-ground parts of both coriander and spinach,with the highest reductions reaching 35.21%and 43.34%,respectively.Treatment with 400 mg·L-1 of CaONPs led to a 23.60%and 21.64%decrease in Cd translocation coefficients for the two vegetables.Concurrently,the application of CaONPs notably enhanced the fresh weight and chlorophyll b content in coriander and spinach(P<0.05).At a spray concentration of 200 mg·L-1 of CaONPs,the malondialdehyde(MDA)content in both vegetables was significantly decreased(P<0.05),with spinach exhibiting a more pronounced reduction.Furthermore,the activities of superoxide dismutase,catalase,peroxidase,and ascorbate peroxidase in these vegetables were variously augmented under different CaONPs concentrations.Notably,spinach showed the most significant increase in peroxidase activity,up to 37.60%.In summary,the foliar application of CaONPs effectively curtailed the uptake and translocation of Cd in coriander and spinach,and modulated their physiological and biochemical responses under Cd stress.关键词
镉/纳米氧化钙/香菜/菠菜/叶面喷施Key words
cadmium/CaONPs/coriander/spinach/foliar spraying分类
农业科技引用本文复制引用
唐小月,李含韵,陈菲,徐小逊,戚鑫,张世熔..叶面喷施纳米氧化钙对香菜和菠菜镉富集及生理特性的影响[J].农业环境科学学报,2025,44(6):1458-1466,9.基金项目
四川省科技计划项目(2023YFS0483) （2023YFS0483）
国家现代农业产业技术体系四川油菜创新团队(SCCXTD-2024-3) Sichuan Science and Technology Program(2023YFS0483) （SCCXTD-2024-3）
Sichuan Rapeseed Innovation Team of National Modern Agricultural Industry Technology System(SCCXTD-2024-3) （SCCXTD-2024-3）
