Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38000 Pakistan.
Department of Life and Environmental Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi 144534, United Arab Emirates.
J Hazard Mater. 2023 Sep 15;458:131861. doi: 10.1016/j.jhazmat.2023.131861. Epub 2023 Jun 15.
Salt stress is becoming a serious problem for the global environment and agricultural sector. Different sources of iron (Fe) can provide an eco-friendly solution to remediate salt-affected soils. The Fe nanoparticles (FeNPs) and conventional sources of Fe (iron-ethylene diamine tetra acetic acid; Fe-EDTA; and iron sulfate; FeSO) were used to evaluate their effects on wheat crop grown in normal and salt-affected soils. Application of FeNPs (25 mg/kg) on normal soil increased the dry weights of wheat roots, shoots, and grains by 46%, 59%, and 77%, respectively. In salt-affected soil, FeNPs increased the dry weights of wheat roots, shoots, and grains by 65%, 78%, and 61%, respectively. The application of FeSO and Fe-EDTA increased the growth parameters of wheat in both normal and salt-affected soils compared to the respective controls. The photosynthetic parameters, including chlorophyll a (50%), chlorophyll b (67%), carotenoids (62%), and total chlorophyll contents (50%), were increased with the application of FeNPs under salt stress. The FeNPs increased plant-essential nutrients like iron, zinc, calcium, magnesium, and potassium in both normal and salt-affected soils. The experiment revealed that the application of Fe plays a significant role in enhancing the growth of wheat on alkaline normal and salt-affected soils. Maximum growth response was recorded with FeNPs than other Fe sources. The future must be focused on long term field experiments to economize the application of FeNPs on a large scale for commercialization.
盐胁迫正成为全球环境和农业领域的一个严重问题。不同来源的铁（Fe）可以为修复受盐影响的土壤提供一种环保的解决方案。本研究采用纳米铁颗粒（FeNPs）和传统铁源（乙二胺四乙酸铁；Fe-EDTA；和硫酸铁；FeSO）来评估它们对在正常和受盐影响土壤中生长的小麦的影响。在正常土壤中施用 25mg/kg 的 FeNPs 分别使小麦根、茎和籽粒的干重增加了 46%、59%和 77%。在受盐影响的土壤中，FeNPs 分别使小麦根、茎和籽粒的干重增加了 65%、78%和 61%。与各自的对照相比，FeSO 和 Fe-EDTA 的施用增加了正常和受盐影响土壤中小麦生长参数。在盐胁迫下，施用 FeNPs 增加了光合参数，包括叶绿素 a（50%）、叶绿素 b（67%）、类胡萝卜素（62%）和总叶绿素含量（50%）。FeNPs 增加了铁、锌、钙、镁和钾等植物必需营养元素在正常和受盐影响土壤中的含量。实验表明，施用 Fe 在增强小麦在碱性正常和受盐影响土壤中的生长方面发挥了重要作用。与其他 Fe 源相比，FeNPs 的生长响应最大。未来必须注重长期田间试验，以节约 FeNPs 的大规模商业化应用。
