氧化铁纳米颗粒作为微量铁元素肥料——机遇与局限

IF 2.6 3区 农林科学 Q1 AGRONOMY
Shraddha Shirsat, Suthindhiran K
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引用次数: 0

摘要

铁是植物生长发育所必需的。缺铁会破坏主要的代谢和细胞活动,如呼吸、DNA合成和叶绿素合成。铁还能激活各种代谢途径,对许多酶都至关重要。铁广泛分布于土壤中,但植物不易吸收。除了中性pH外,铁在碱性条件下也形成不溶性铁络合物。土壤中铁的溶解度与植物对铁的需要量之间的不平衡是导致铁黄化的根本原因。各种铁肥料,包括有机、螯合和无机,施用于土壤和叶片,以治疗缺铁和黄化。目前使用的铁肥料价格昂贵,容易吸附在土壤颗粒上,导致铁随水从土壤中浸出,从而降低了其效率。它们还需要反复施用,导致土壤中铁肥浓度过高,可能对植物造成伤害。纳米铁肥料在农业生产中的应用已经扩大,以解决现有铁肥料的缺点。纳米铁肥料的优点包括其物理和化学特性,例如高表面积体积比,有助于植物的根和叶容易吸收。控释氧化铁纳米肥料以一种与作物营养需求相协调的方式提供有调节的养分释放。这提高了植物中养分的积累,填补了养分缺乏的空白,降低了因淋溶而造成的环境风险。本文综述了氧化铁纳米颗粒作为铁微量营养肥料的可能性、其吸收和作用机制、优点和局限性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Iron oxide nanoparticles as iron micronutrient fertilizer—Opportunities and limitations

Iron (Fe) is necessary for plant growth and development. Iron deficiency disrupts major metabolic and cellular activities such as respiration, DNA synthesis, and chlorophyll synthesis. Iron also activates various metabolic pathways and is vital to numerous enzymes. Iron is widely distributed in soil, but plants do not readily absorb it. In addition to neutral pH, Fe also forms insoluble Fe complexes under alkaline conditions. The fundamental cause of Fe chlorosis is an imbalance between the solubility of Fe in soil and the demand for Fe by plants. Various Fe fertilizers, including organic, chelated, and inorganic, are administered to the soil and leaves to treat Fe deficiency and chlorosis. Currently, used Fe fertilizers are expensive, easily adsorb on soil particles, and cause Fe to leach out of the soil with water, thereby diminishing their efficiency. They also need to be applied repeatedly, resulting in an excessive Fe fertilizer concentration in the soil that can cause harm to the plants. The usage of Fe nanofertilizers in agricultural production has expanded to address the disadvantages of existing Fe fertilizers. The advantages of nanosized Fe fertilizers include their physical and chemical characteristics, such as the high surface area to volume ratio that aids in easy absorption by plants’ roots and leaves. Controlled-release iron oxide nanofertilizers supply the regulated release of nutrients in a way that is coordinated with the nutritional needs of the crops. This improves the accumulation of nutrients in the plant, filling in the gap of nutrient deficiency and lowering environmental risks due to leaching. The possibility of iron oxide nanoparticles as Fe micronutrient fertilizers, their uptake and mechanism of action, advantages, and limitations are critically highlighted in this review article.

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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
90
审稿时长
8-16 weeks
期刊介绍: Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.
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