农业中长时间的污水灌溉导致了重金属在土壤中的积累,危害土壤质量和食品安全,从而通过食用受污染的作物对人类健康构成潜在威胁。本研究旨在提高芥菜(BrassicajunceaL.cv。Varuna和NRCHB101)种植并稳定重金属(Cd,Cr,Ni,Cu,和Zn)在使用稻壳灰(RHA)的废水灌溉土壤中,碾米机副产品,从北方邦东部的Chandauli地区收集,印度。结果表明,增长显着改善,生物量,生理学,随着废水灌溉土壤中RHA用量的增加,芥菜植物的产量(p≤0.05)。随着RHA施用量的增加,芥菜植株不同部位的重金属积累量降低。在土壤中施用2%的RHA被证明对减少Cd最有效,Cr,Ni,Cu,种子中锌的积累增加了29%,29.6%,23.1%,21.3%和20.1%,分别在瓦鲁纳和30.1%,21.4%,11.1%,12.1%,和28.5%,分别在NRCHB101个品种中。本研究结果表明,在污水灌溉土壤中RHA改良剂降低了Cd的生物积累,Cr,Ni,Cu,和锌,因此它们在栽培芥菜植物中的毒性。这项研究揭示了RHA的一种新应用,提供了一个有希望的解决方案,以促进可持续农业和减少土壤芥菜系统中与重金属相关的健康风险。
Prolonged wastewater irrigation in agriculture has led to the accumulation of heavy metals in soil, endangering both the soil quality and food safety, thereby posing a potential threat to human health through the consumption of contaminated crops. The present study aimed to enhance the yield of
mustard (Brassica juncea L. cv. Varuna and NRCHB 101) plants and stabilize heavy metals (Cd, Cr, Ni, Cu, and Zn) in wastewater-irrigated soil using rice husk ash (RHA), rice mill by-product, collected from Chandauli region of Eastern Uttar Pradesh, India. Results demonstrated significant improvements in growth, biomass, physiology, and yield of
mustard plant with increasing RHA application in wastewater irrigated soil (p ≤ 0.05). Heavy metal accumulation in different parts of
mustard plants decreased as RHA application rate increased. Applying RHA at 2% in soil proved to be most effective in reducing Cd, Cr, Ni, Cu, and Zn accumulation in seeds by 29%, 29.6%, 23.1%, 21.3% and 20.1%, respectively in Varuna and 30.1%, 21.4%, 11.1%, 12.1%, and 28.5%, respectively in NRCHB 101cultivars. The present findings showed that RHA amendment in wastewater irrigated soil had reduced bioaccumulation of Cd, Cr, Ni, Cu, and Zn and consequently their toxicity in cultivated
mustard plants. A novel application of RHA is unveiled in this research, offering a promising solution to promote sustainable agriculture and to reduce heavy metal associated health risks within the soil-
mustard system.