江苏农业学报2025，Vol.41Issue(12)：2307-2314,8.DOI:10.3969/j.issn.1000-4440.2025.12.003
硫酸亚铁对六价铬[Cr(Ⅵ)]污染条件下水稻幼苗生长的影响
Effects of ferrous sulfate on the growth of rice seedlings under Cr(Ⅵ)pollution conditions
摘要
Abstract
In order to explore the effect of ferrous sulfate on the absorption and accumulation of chromium in rice seedlings under Cr(Ⅵ)pollution conditions,the method of soil potting was adopted.Based on the same potassium dichro-mate(K2Cr2O7)content,different content gradients of FeSO4·7H2O were added.A total of six treatments were set up,namely CK(with an addition of FeSO4·7H2O of 0 mg/kg),T1(with an addition of FeSO4·7H2O of 40 mg/kg),T2(with an addition of FeSO4·7H2O of 80 mg/kg),and T3(with an addition of FeSO4·7H2O of 120 mg/kg),T4(with an addition of FeSO4·7H2O of 160 mg/kg),and T5(with an addition of FeSO4·7H2O of 200 mg/kg),to investigate the influence of FeSO4·7H2O on the growth,chromium uptake and the antioxidant system of rice seedlings under chromi-um stress.The results showed that the fresh weights of stems,leaves and roots in treatments T3 and T5 were significantly higher than those in CK(P＜0.05).After the addition of FeSO4·7H2O,the chromium content in the aboveground and root systems of rice decreased significantly(P＜0.05).Addition of FeSO4·7H2O could significantly reduce the Cr(Ⅵ)content in soil(P＜0.05).In addition,the application of an appropriate amount of FeSO4·7H2O could effectively enhance the activities of soil urease and soil catalase,as well as the activities of rice peroxidase(POD)and gluta-thione S-transferase(GST).In conclusion,the application of appropriate ferrous sulfate can enhance the activity of antioxi-dant enzymes in rice,strengthen its resistance to chromium stress,increase the biomass of rice seedlings,reduce the con-tent of Cr(Ⅵ)in the soil and rice,and alleviate the toxic effects of Cr(Ⅵ)on rice.关键词
六价铬/硫酸亚铁/水稻幼苗/酶Key words
hexavalent chromium/ferrous sulfate/rice seedlings/enzyme分类
农业科技引用本文复制引用
赵兴梅,胡宇聪,谢琪琪,张云华,鲁洪娟..硫酸亚铁对六价铬[Cr(Ⅵ)]污染条件下水稻幼苗生长的影响[J].江苏农业学报,2025,41(12):2307-2314,8.基金项目
国家重点研发计划项目(2023YFD2302900) （2023YFD2302900）
2021、2022淮南市耕地质量等级更新评价项目(KJ2021553) （KJ2021553）
