Effects of different passivators on growth and physiological characteristics of Ophiopogon japonicus in cadmium-contaminated soil
10.7501/j.issn.0253-2670.2020.24.026
- VernacularTitle: 不同钝化剂对镉污染土壤栽培的川麦冬生长及生理特性的影响
- Author:
Pan JIANG
1
Author Information
1. Mianyang Teachers' College
- Publication Type:Journal Article
- Keywords:
Cadmium pollution;
Comprehensive evaluation;
Ophiopogon japonicus (L.f) Ker-Gawl;
Passivation remediation;
Soil
- From:
Chinese Traditional and Herbal Drugs
2020;51(24):6354-6361
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To comprehensively evaluate the different passivation materials on growth and cadmium uptake and accumulation of Ophiopogon japonicus cultivated in cadmium contaminated soil of. Methods: Using one-year-old O. japonicus as experimental material, the effects of five different passivation materials (white marble Ar, straw biochar Br, fly ash Fh, bacterial residue Me, diatomite Dm) on the growth, physiological and biochemical indexes and cadmium absorption and accumulation of O. japonicus were studied by soil pot experiment. Results: The biomass, chlorophyll, soluble sugar and soluble protein of O. japonicus could be significantly increased in soils contaminated with two kinds of Cd under different passivation materials. Among them, Ar and Me were the most improved. In addition, the activities of antioxidant enzyme system of O. japonicus were significantly decreased, and the content of MDA had no noteworthy change. Different passivation materials remarkably increased the content of flavonoids in the underground part of O. japonicus, among which Ar and Fh treatments increased the most. The contents of heavy metal Cd in all parts of O. japonicus were decreased by different passivation materials, and the contents of Cd in aboveground and underground parts of O. japonicus were significantly lower than those of the control, and the effects of Ar, Br and Fh treatments were better than those of the control. Conclusion: Studies have shown that by combining and comparing treatments of different passivating materials, in terms of the biomass of O. japonicus treated with Me, the biomass improvement effect of Me was better than that of Ar and Br. Aiming at the effect of reducing Cd absorption and accumulation of O. japonicus and improving the effective component flavone of O. japonicus, it can be concluded that Ar and Fh have better effects in treating Cd polluted soil and improving the quality of O. japonicus.
