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Impacts of industrial contamination on rice cultivation: A review 工业污染对水稻种植的影响
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2026-02-01 Epub Date: 2025-01-17 DOI: 10.1016/j.pedsph.2025.01.004
Ayan SAHA , Kushal ROY , Md NAZIR , Dibyendu SAHA
Rice cultivation, vital to global food security and the United Nations Sustainable Development Goals (SDGs), faces increasing threats from industrial pollution, which contaminates soil and water, endangers human health, and weakens agricultural resilience. Studies indicate that contaminants such as persistent organic pollutants, radioactive elements, dyes, and potentially toxic elements, particularly from mining and industrial activities, significantly degrade soil fertility, impair plant health, and introduce harmful residues into the food chain. This contamination compromises food safety and diminishes agricultural productivity, posing a serious challenge to sustainability. Addressing these impacts requires sustainable industrial practices, advanced technologies, and eco-friendly remediation techniques. Solutions like biochar applications, precision farming, and artificial intelligence (AI)-driven pollution detection provide effective measures for restoring soil health, protecting crop integrity, and ensuring the resilience of rice farming. These approaches align rice cultivation with global sustainability goals by integrating sustainable soil and water management, adaptive crop selection, and AI innovations. Protecting rice cultivation upholds farmer livelihoods and strengthens global commitments to SDGs Zero Hunger and a resilient, safe food supply, underscoring the essential balance between industrial progress and sustainable rice cultivation.
水稻种植对全球粮食安全和联合国可持续发展目标(sdg)至关重要,但它面临着越来越多的工业污染威胁,污染土壤和水,危害人类健康,削弱农业恢复力。研究表明,持久性有机污染物、放射性元素、染料和潜在有毒元素等污染物,特别是来自采矿和工业活动的污染物,会显著降低土壤肥力,损害植物健康,并将有害残留物引入食物链。这种污染危及食品安全,降低农业生产力,对可持续性构成严重挑战。解决这些影响需要可持续的工业实践、先进的技术和生态友好的修复技术。生物炭应用、精准农业和人工智能驱动的污染检测等解决方案为恢复土壤健康、保护作物完整性和确保水稻种植的复原力提供了有效措施。这些方法通过整合可持续水土管理、适应性作物选择和人工智能创新,使水稻种植与全球可持续发展目标保持一致。保护水稻种植可维护农民生计,并加强对可持续发展目标零饥饿和有韧性、安全的粮食供应的全球承诺,强调了工业进步与可持续水稻种植之间的基本平衡。
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引用次数: 0
Soil organic matter revisited: Why humic substances still matter? 土壤有机质重访:为什么腐殖质仍然很重要?
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2026-02-01 Epub Date: 2025-11-19 DOI: 10.1016/j.pedsph.2025.11.006
Sen DOU , Yifeng ZHANG , Jun SHAN , Meng WU , Rui MA , Song GUAN , Zhongjun JIA
Soil organic matter (SOM) is crucial for ecosystem carbon cycling, soil fertility, and environmental quality. As the main component of SOM, humic substances (HS) are considered a unique category of nonuniformly assembled substances. It is widely accepted that HS are originated from small molecules produced during the decomposition of plant and animal residues or from residual macromolecules. These molecules can be recombined or condensed via enzymatic and mineral catalysis into quasi-macromolecular compounds or compound groups with high condensation (elevated C/H molar ratio) and relatively large molecular weight and are further stabilized by mineral association. Although HS can be regarded as an extension or a narrow definition of SOM, their properties are inherently more complex, and their chemical composition, structure, and formation processes remain controversial. Here, we examine the formation theories, compositional structure, stabilization mechanisms, and functional roles of SOM and HS. We propose that HS indeed differ from non-HS, with HS consisting of both residual and synthetic quasi-macromolecular substance components, which collectively form unique compounds or compound groups with independent characteristics. Consequently, HS remain fundamental to soil science and continue to be widely utilized through various HS-based technologies and products in agriculture and environmental fields.
土壤有机质对生态系统碳循环、土壤肥力和环境质量至关重要。腐植酸物质(HS)作为SOM的主要成分,被认为是一类独特的非均匀组装物质。人们普遍认为HS来源于动植物残体分解过程中产生的小分子或残体大分子。这些分子可以通过酶和矿物催化重组或缩合成高缩合(C/H摩尔比升高)和相对大分子量的准大分子化合物或化合物基团,并通过矿物结合进一步稳定。虽然HS可以被视为SOM的延伸或狭义定义,但其性质本身更为复杂,其化学成分、结构和形成过程仍存在争议。在此,我们研究了SOM和HS的形成理论、组成结构、稳定机制和功能作用。我们认为HS确实不同于非HS, HS由残余和合成的准大分子物质组分组成,它们共同形成具有独立特征的独特化合物或化合物基团。因此,HS仍然是土壤科学的基础,并通过各种基于HS的技术和产品继续在农业和环境领域得到广泛应用。
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引用次数: 0
Occurrence of microplastics in terrestrial habitats: Hazards and pollution abatement 微塑料在陆地栖息地的发生:危害和污染的减少
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2026-02-01 Epub Date: 2025-01-23 DOI: 10.1016/j.pedsph.2025.01.010
Babalola Aisosa ONI , Kingsley Chukwunonso AGU , Samuel Eshorame SANNI
Microplastics (MPs) are ubiquitous and pose an environmental risk. This review examined MP pollution in terrestrial ecosystems from a myriad of poorly understood sources. Knowledge regarding the occurrence sources, migration behaviors, ecotoxicology, absorption mechanisms, and effects of MPs has also been fully summarized. Microplastics interact with contaminants, such as antibiotics, pesticides, heavy metals, etc., and may act as vectors for contaminant transfer in terrestrial ecosystems. The transportation and retention of MPs in soil are governed by interactions among their inherent properties, such as size, shape, surface charge, and density. Interestingly, MP migration into soil is lacking research. The MPs and nanoplastics were also found in edible fruits and vegetables. The MP contamination in soil affects ecosystems, causing soil structure changes, fertility reduction, and pollutant leaching into groundwater. The MP concentration lies in the range of 43–2 443 and 40–43 000 items kg-1 in agricultural and urban soils, respectively. This review provides a comprehensive roadmap for future research and a framework for soil MP risk assessment. Future studies on the uptake, accumulation, and translocation of MPs and their associated toxins by plants are essential for evaluating their risks to food security and human health. Research on MPs in terrestrial habitats lacks comprehensive data on their long-term persistence, degradation pathways, and interactions with soil components under varying environmental conditions. Additionally, limited understanding exists regarding MP impacts on soil biodiversity, pollutant mobility, and plant uptake, highlighting the need for innovative detection methods and effective pollution abatement strategies.
微塑料(MPs)无处不在,对环境构成威胁。这篇综述研究了陆地生态系统中无数鲜为人知的MP污染来源。对MPs的发生来源、迁移行为、生态毒理学、吸收机制和影响等方面的知识也进行了全面的总结。微塑料与抗生素、农药、重金属等污染物相互作用,并可能成为陆地生态系统中污染物转移的媒介。MPs在土壤中的运移和滞留受其固有特性(如大小、形状、表面电荷和密度)之间的相互作用所控制。有趣的是,MP进入土壤的迁移缺乏研究。可食用水果和蔬菜中也发现了MPs和纳米塑料。土壤中MP污染影响生态系统,导致土壤结构改变、肥力降低、污染物渗入地下水。在农业土壤和城市土壤中,MP的浓度分别在43-2 ~ 443和40-43 000项kg-1之间。这篇综述为未来的研究提供了一个全面的路线图和土壤MP风险评估框架。未来对植物对MPs及其相关毒素的吸收、积累和转运的研究对于评估其对粮食安全和人类健康的风险至关重要。对陆地生境中MPs的研究缺乏关于其长期持久性、降解途径以及在不同环境条件下与土壤组分相互作用的全面数据。此外,MP对土壤生物多样性、污染物流动性和植物吸收的影响了解有限,因此需要创新的检测方法和有效的污染减排策略。
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引用次数: 0
Unraveling the potential of soil microorganisms for nutrient solubilization and simultaneous pesticide degradation toward sustainable agriculture 揭示土壤微生物在养分增溶和农药降解方面的潜力,以实现可持续农业
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2026-02-01 Epub Date: 2025-02-07 DOI: 10.1016/j.pedsph.2025.02.001
Shalni SATYA, Milap DASHORA, Preksha PALSANIA, Mohd Ashraf DAR, Garima KAUSHIK
With the changing climate and escalating population, there will be extreme pressure on agricultural food production to ensure global food security. Traditional agricultural practices have relied heavily on hazardous pesticides and chemical fertilizers to boost crop yields. However, their continuous and excessive use has caused significant harm to non-target organisms, including humans, while also leading to a severe decline in soil health due to their indiscriminate and unbalanced application. Hence, serious efforts are needed to control this mounting problem of soil and environmental pollution. One effective strategy involves using microorganisms capable of solubilizing nutrients and breaking down pesticides. These microorganisms improve crop nutrient absorption by solubilizing essential nutrients and simultaneously degrade pesticide residues in soil. Utilizing this ability of microorganisms to degrade agrochemicals, microbial remediation offers a dependable and economical method for reducing the effects of such unwarranted contaminants. This review presents an extensive overview of pesticide use as well as microorganisms in soil as pesticide degraders, nutrient mobilizers (phosphate (PO43--P), potassium (K), and zinc (Zn)), and plant growth promoters for preventing the unsustainable exploitation of natural reserves. This review aims to highlight the diverse benefits these microorganisms offer across various domains while presenting an exciting opportunity to advance sustainable agriculture and firstly establishes a connection between nutrient solubilization and pesticide degradation mediated by microorganisms. It also offers a comprehensive bibliographic review of the application of plant growth-promoting microorganisms for solubilizing nutrients, such as P, K, and Zn, and degrading pesticides as well.
随着气候变化和人口不断增加,农业粮食生产将面临巨大压力,以确保全球粮食安全。传统的农业实践严重依赖有害的农药和化肥来提高作物产量。然而,它们的持续和过度使用对包括人类在内的非目标生物造成了重大伤害,同时由于它们的滥用和不平衡使用也导致土壤健康严重下降。因此,需要认真努力来控制日益严重的土壤和环境污染问题。一个有效的策略是利用能够溶解养分和分解农药的微生物。这些微生物通过溶解必需养分来改善作物的养分吸收,同时降解土壤中的农药残留。利用微生物的这种能力来降解农药,微生物修复提供了一种可靠和经济的方法来减少这些不必要的污染物的影响。本文综述了农药的使用以及土壤中微生物作为农药降解剂、养分动员剂(磷酸盐(PO43—P)、钾(K)和锌(Zn))和植物生长促进剂以防止自然保护区的不可持续开发的广泛概况。本综述旨在强调这些微生物在各个领域提供的各种益处,同时为推进可持续农业提供了令人兴奋的机会,并首次建立了微生物介导的养分增溶和农药降解之间的联系。它还提供了一个全面的文献综述应用的植物生长促进微生物在溶解营养物质,如磷,钾,锌和降解农药以及。
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引用次数: 0
An index for characterizing bioavailability and risk of metals in soil-vegetable systems 表征土壤-蔬菜系统中金属的生物有效性和风险的指标
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2026-02-01 Epub Date: 2025-07-23 DOI: 10.1016/j.pedsph.2025.07.012
Lanqin YANG , Yuechen YU , Yuanming WANG , Biao HUANG , Wenyou HU
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引用次数: 0
Impacts of microplastics, fluoride and mancozeb on tomato plant growth and rhizosphere microbial dynamics: A metagenomic analysis 微塑料、氟化物和代森锰锌对番茄植株生长和根际微生物动力学的影响:宏基因组分析
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2025-12-01 Epub Date: 2024-09-17 DOI: 10.1016/j.pedsph.2024.09.001
Ajay KUMAR , Rajni SHARMA , Muskan BOKOLIA , Riyapi DAS , Sanjiv KUMAR , Ravindresh CHABBRA , Baljinder SINGH
Microplastics (MPs), fluoride (FR), and fungicide mancozeb (MZ) are common contaminants in soil. However, there is no information about the combined impacts of MPs, FR, and MZ on tomato plant growth features in the literature. This study aimed to investigate the effects of combined application of MPs, FR, and MZ (both analytical grade and commercial) on the growth and development of tomato plants and metagenomics of rhizosphere soil. A pot experiment was set up in an artificial greenhouse with two sets of treatments. One set was the combined application of MPs, FR, and analytical grade MZ (B2) and a control without the application of MPs, FR, and MZ (W2), and the other set was the combined application of MPs, FR, and commercial MZ (B3) and a control without the application of MPs, FR, and MZ (W3). No detrimental effects of MPs, FR, and MZ were detected on the growth parameters of tomato plants, including the number of leaves and chlorophyll concentration. However, tomato roots showed knot and nodulation-type structures, and metabolomic profiling revealed that combined exposure to MPs, FR, and MZ profoundly reprogrammed the primary metabolism in tomato roots, with marked alterations in carbohydrate and amino acid pathways. Metagenome whole genome sequencing showed that the B2 and B3 treatments profoundly affected soil microbial community composition, diversity, gene abundances, and functional gene variations compared to W2 and W3. Proteobacteria became the dominating phylum in B2 and B3, causing a significant shift in the microbiome. Its abundance soared to 66.7% in B2 and 75.4% in B3, compared to only 35.9% in W2 and 28.9% in W3. On the other hand, Actinobacteria decreased significantly from 55.6% in W2 and 63.8% in W3 to 18.1% in B2 and 9.6% in B3. This study highlights the microbial shifts due to combined application of MPs, FR, and MZ, providing evidence for understanding their environmental risks.
微塑料(MPs)、氟化物(FR)和杀菌剂代森锰锌(MZ)是土壤中常见的污染物。然而,文献中尚未见MPs、FR和MZ对番茄植株生长特性的联合影响。本研究旨在研究分析级和市售级多磺酸钠(MPs)、多磺酸钠(FR)和多磺酸钠(MZ)配施对番茄植株生长发育和根际土壤宏基因组学的影响。在人工温室进行盆栽试验,采用两套处理方法。一组是MPs、FR和分析级MZ (B2)的联合应用,另一组是MPs、FR和MZ的联合应用(W2),另一组是MPs、FR和商业MZ (B3)的联合应用,另一组是MPs、FR和MZ的联合应用(W3)。MPs、FR和MZ对番茄植株叶片数和叶绿素浓度等生长参数均无不良影响。然而,番茄根系显示出结瘤型结构,代谢组学分析显示,MPs、FR和MZ的联合暴露深刻地重新编程了番茄根系的初级代谢,碳水化合物和氨基酸途径发生了显著变化。宏基因组全基因组测序结果表明,与W2和W3相比,B2和B3处理对土壤微生物群落组成、多样性、基因丰度和功能基因变异均有显著影响。变形菌门成为B2和B3的主导门,引起微生物组的显著变化。B2和B3的丰度分别为66.7%和75.4%,而W2和W3的丰度分别为35.9%和28.9%。放线菌数量从W2的55.6%和W3的63.8%显著下降到B2的18.1%和B3的9.6%。本研究强调了MPs、FR和MZ联合应用导致的微生物变化,为理解它们的环境风险提供了证据。
{"title":"Impacts of microplastics, fluoride and mancozeb on tomato plant growth and rhizosphere microbial dynamics: A metagenomic analysis","authors":"Ajay KUMAR ,&nbsp;Rajni SHARMA ,&nbsp;Muskan BOKOLIA ,&nbsp;Riyapi DAS ,&nbsp;Sanjiv KUMAR ,&nbsp;Ravindresh CHABBRA ,&nbsp;Baljinder SINGH","doi":"10.1016/j.pedsph.2024.09.001","DOIUrl":"10.1016/j.pedsph.2024.09.001","url":null,"abstract":"<div><div>Microplastics (MPs), fluoride (FR), and fungicide mancozeb (MZ) are common contaminants in soil. However, there is no information about the combined impacts of MPs, FR, and MZ on tomato plant growth features in the literature. This study aimed to investigate the effects of combined application of MPs, FR, and MZ (both analytical grade and commercial) on the growth and development of tomato plants and metagenomics of rhizosphere soil. A pot experiment was set up in an artificial greenhouse with two sets of treatments. One set was the combined application of MPs, FR, and analytical grade MZ (B2) and a control without the application of MPs, FR, and MZ (W2), and the other set was the combined application of MPs, FR, and commercial MZ (B3) and a control without the application of MPs, FR, and MZ (W3). No detrimental effects of MPs, FR, and MZ were detected on the growth parameters of tomato plants, including the number of leaves and chlorophyll concentration. However, tomato roots showed knot and nodulation-type structures, and metabolomic profiling revealed that combined exposure to MPs, FR, and MZ profoundly reprogrammed the primary metabolism in tomato roots, with marked alterations in carbohydrate and amino acid pathways. Metagenome whole genome sequencing showed that the B2 and B3 treatments profoundly affected soil microbial community composition, diversity, gene abundances, and functional gene variations compared to W2 and W3. Proteobacteria became the dominating phylum in B2 and B3, causing a significant shift in the microbiome. Its abundance soared to 66.7% in B2 and 75.4% in B3, compared to only 35.9% in W2 and 28.9% in W3. On the other hand, Actinobacteria decreased significantly from 55.6% in W2 and 63.8% in W3 to 18.1% in B2 and 9.6% in B3. This study highlights the microbial shifts due to combined application of MPs, FR, and MZ, providing evidence for understanding their environmental risks.</div></div>","PeriodicalId":49709,"journal":{"name":"Pedosphere","volume":"35 6","pages":"Pages 1078-1088"},"PeriodicalIF":7.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145555062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nano-sized humic acid improves phosphate fertiliser efficiency in chilli pepper 纳米腐植酸提高了辣椒磷肥利用率
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2025-12-01 Epub Date: 2024-09-24 DOI: 10.1016/j.pedsph.2024.09.007
Qizhong XIONG , Shaojie WANG , Xuxiang CHEN , Jianyuan JING , Yonglin JIN , Hongying LI , Chaochun ZHANG , Yuji JIANG , Xinxin YE
Humic acid (HA) prevents phosphorus (P) fixation and promotes P absorption by plants, thereby effectively increasing the efficiency of phosphate fertiliser utilisation. Although nano-sized HA (NHA) might exhibit superior effects compared to conventional-sized HA (CHA), evidence is limited. Therefore, we investigated the effects of CHA and NHA applied with conventional phosphate fertiliser (CHA+CP and NHA+CP, respectively) on chilli pepper biomass, P uptake, and root morphology, as well as soil available P content, and evaluated CHA, NHA, and their residues in the soil for differences in specific surface area, functional groups, molecular weight distribution, and surface elemental compositions in a 40-d pot cultivation experiment. Results showed that the CHA+CP and NHA+CP treatments significantly increased pepper biomass and P uptake by 15.2%–24.7% and 37.9%–49.0%, respectively, compared to the conventional phosphate fertiliser applied alone (CP) treatment (P < 0.05), with NHA exhibiting a greater effect than CHA. This was primarily related to NHA's stronger ability to reduce P fixation than that of CHA. Soil available P content significantly increased by 5.8% and 3.8% in the NHA+CP treatment compared with CHA+CP on days 22 and 40 of cultivation, respectively (P < 0.05). Nano-sized HA contained more small-molecule components and carboxyl groups than CHA, which can more stimulate root elongation and thus promote root P uptake. Furthermore, fertiliser-derived P gradually entered the structure of CHA or NHA during cultivation. The presence of more plant-available forms (e.g., H2 PO4 and HPO42-) in NHA compared to CHA also contributed to better regulation of phosphate fertiliser efficacy. In conclusion, NHA is superior to CHA in improving phosphate fertiliser efficiency, making it a potential alternative material for the development of high-efficiency phosphate fertilisers. This presents an excellent opportunity to minimise P resource waste.
腐植酸(HA)阻止磷(P)的固定,促进植物对磷的吸收,从而有效提高磷肥的利用效率。尽管纳米级透明质酸(NHA)可能比常规级透明质酸(CHA)表现出更好的效果,但证据有限。因此,本研究在常规磷肥(分别为CHA+CP和NHA+CP)下施用CHA和NHA对辣椒生物量、磷吸收量、根系形态和土壤速效磷含量的影响,并通过40 d盆栽试验评价CHA、NHA及其在土壤中的残留量在比表面积、官能团、分子量分布和表面元素组成方面的差异。结果表明:CHA+CP和NHA+CP处理较常规单施磷肥(CP)处理显著提高了辣椒生物量和磷吸收量,分别提高了15.2% ~ 24.7%和37.9% ~ 49.0% (P < 0.05),其中NHA的作用大于CHA。这主要与NHA比CHA具有更强的降低固磷能力有关。栽培第22天和第40天,NHA+CP处理土壤速效磷含量较CHA+CP分别显著提高5.8%和3.8% (P < 0.05)。纳米HA比CHA含有更多的小分子成分和羧基,能更好地刺激根系伸长,从而促进根系对磷的吸收。此外,在栽培过程中,肥料衍生的磷逐渐进入CHA或NHA结构。与CHA相比,NHA中存在更多的植物可利用形态(例如H2PO4−和HPO42-),也有助于更好地调节磷肥功效。综上所述,NHA在提高磷肥效率方面优于CHA,是开发高效磷肥的潜在替代材料。这提供了一个极好的机会,以尽量减少磷资源浪费。
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引用次数: 0
Efficiency-enhancing methods for predicting nitrogen mineralization characteristics in paddy soils using soil properties and rapid soil extractions 利用土壤特性和快速土壤提取技术预测水稻土氮矿化特征的高效方法
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2025-12-01 Epub Date: 2024-10-04 DOI: 10.1016/j.pedsph.2024.10.001
Yujuan LIU , Yuqi CHEN , Xiuyun LIU , Siyuan CAI , Jiahui YUAN , Lingying XU , Yu WANG , Xu ZHAO , Xiaoyuan YAN
Soil mineralized nitrogen (N) is a vital component of soil N supply capacity and an important N source for rice growth. Unveiling N mineralization (Nm) process characteristics and developing a simple and effective approach to evaluate soil Nm are imperative to guide N fertilizer application and enhance its efficiency in various paddy soils with different physicochemical properties. Soil properties are important driving factors contributing to soil Nm differences and must be considered to achieve effective N management. Nevertheless, discrepancies in Nm capacity and other key influencing factors remain uncertain. To address this knowledge gap, this study collected 52 paddy soil samples from Taihu Lake Basin, China, which possess vastly different physicochemical properties. The samples were subjected to a 112-d submerged anaerobic incubation experiment at a constant temperature to obtain the soil Nm characteristics. Reaction kinetics models, including one-pool exponential model, two-pool exponential model, and effective cumulative temperature model, were employed to compare characteristic differences between Nm potential (Nmp) and short-term accumulated mineralized N (Amn) processes in relation to soil physicochemical properties. Based on these relationships, simplified Nmp prediction methods for paddy soils were established. The results revealed that the Nmp values were 145.18, 88.64, and 21.03 mg kg-1 in paddy soils with pH < 6.50, 6.50 ≤ pH ≤ 7.50, and pH > 7.50, respectively. Significantly, short-term Amn at day 14 showed a good correlation (P < 0.01) with Nmp (R2 = 0.94), indicating that the prevailing short-term incubation experiment is an acceptable marker for Nmp. Moreover, Nmp correlated well with the ultraviolet absorbance value at 260 nm based on NaHCO3 extraction (Na260), further streamlining the Nmp estimation method. The incorporation of easily obtainable soil properties, including pH, total N (TN), and the ratio of total organic carbon to TN (C/N), alongside Na260 for Nmp evaluation allowed the multiple regression model, Nmp = 58.62 × TN - 23.18 × pH + 13.08 × C/N + 86.96 × Na260, to achieve a high prediction accuracy (R2 = 0.95). The reliability of this prediction was further validated with published data of paddy soils in the same region and other rice regions, demonstrating the regional applicability and prospects of this model. This study underscored the roles of soil properties in Nm characteristics and mechanisms and established a site-specific prediction model based on rapid extractions and edaphic properties of paddy soils, paving the way for developing rapid and precise Nm prediction models.
土壤矿化氮(N)是土壤供氮能力的重要组成部分,是水稻生长的重要氮源。揭示土壤氮素矿化过程特征,建立简单有效的土壤氮素矿化评价方法,是指导不同理化性质水稻土氮肥施用和提高氮肥效率的必要手段。土壤性质是影响土壤氮素差异的重要驱动因素,是实现有效氮素管理必须考虑的因素。然而,纳米容量的差异和其他关键影响因素仍然不确定。为了解决这一知识空白,本研究从中国太湖流域收集了52个水稻土样品,这些样品具有截然不同的物理化学性质。对样品进行112 d的恒温水下厌氧培养实验,获得土壤纳米特性。采用单池指数模型、双池指数模型和有效积温模型等反应动力学模型,比较纳米势(Nmp)和短期累积矿化氮(Amn)过程对土壤理化性质的特征差异。基于这些关系,建立了水稻土Nmp的简化预测方法。结果表明,在pH <; 6.50、6.50≤pH≤7.50和pH >; 7.50条件下,水稻土的Nmp值分别为145.18、88.64和21.03 mg kg-1。值得注意的是,第14天的短期Amn与Nmp呈良好的相关性(P < 0.01) (R2 = 0.94),表明目前流行的短期孵育实验是一个可接受的Nmp指标。此外,Nmp与NaHCO3提取(Na260)的260 nm紫外吸光度值具有良好的相关性,进一步简化了Nmp估算方法。将土壤pH、全氮(TN)、总有机碳与TN之比(C/N)等易于获取的土壤性质与Na260结合进行Nmp评价,使Nmp = 58.62 × TN - 23.18 × pH + 13.08 × C/N + 86.96 × Na260的多元回归模型具有较高的预测精度(R2 = 0.95)。利用已发表的同一地区和其他水稻区水稻土数据进一步验证了该预测的可靠性,证明了该模型的区域适用性和应用前景。本研究强调了土壤性质在纳米粒特征中的作用及其机制,并建立了基于水稻土快速提取和土壤性质的特定位点纳米粒预测模型,为建立快速、精确的纳米粒预测模型奠定了基础。
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引用次数: 0
Effects of rice cropping method and growth stage on rhizosphere bacterial diversity and soil biological attributes 水稻种植方式和生育期对根际细菌多样性和土壤生物学特性的影响
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2025-12-01 Epub Date: 2024-09-07 DOI: 10.1016/j.pedsph.2024.08.010
Surathi ADITHYA, Sai Aparna Devi NUNNA, Chinnappan CHINNADURAI, Dananjeyan BALACHANDAR
Rice cropping method is primarily decided by soil moisture regime. System of rice intensification (SRI) and direct-seeded aerobic rice are two primary modifications of traditional wetland rice. Understanding rice rhizosphere microbiome and functioning as influenced by these cropping methods is essential for sustaining rice productivity. The objective of this study was to assess the impact of three different rice cropping methods (wetland rice, SRI, and aerobic rice) on the biochemical properties and bacterial communities within the rice rhizosphere across three key rice growth stages: tillering, flowering, and maturity. Soil organic carbon (SOC), microbial biomass carbon (MBC), dehydrogenase activity, substrate-induced respiration (SIR), and metabolic quotient (MQ) were assessed along with high-throughput 16S rRNA sequencing of rice rhizosphere soils. The rice rhizosphere soil registered the highest SOC, MBC, and dehydrogenase activity in SRI followed by wetland rice and then aerobic rice. Cropping method had a minimal impact on SIR and MQ. Along with cropping method, growth stage also significantly altered these biological attributes of rice rhizosphere. The trends of the highest SOC content and dehydrogenase activity at the flowering stage and the highest MBC content and SIR at the tillering stage of rice were observed in all three rice cropping methods. The analysis of bacterial communities, based on 16S rRNA gene sequencing, revealed that both cropping method and growth stage significantly impacted the composition of rhizosphere microbiomes. However, the influence of cropping method was less pronounced compared to growth stage. Cropping method caused notable shifts in the abundances of Proteobacteria, Bacteroidetes, and Chloroflexi, while growth stage affected the abundances of Proteobacteria, Actinobacteria, Cyanobacteria, Firmicutes, Chloroflexi, and Bacteroidetes. Based on these results, the SRI method led to higher diversification to the rhizosphere bacteriobiota, as well as greater incorporation of carbon into the soil and increased dehydrogenase activity compared to wetland rice and aerobic rice. This study deepens our understanding of how different cropping methods influence plant-microbe interaction and the implications for overall rice productivity and soil health.
水稻的种植方式主要取决于土壤水分状况。水稻集约化系统和旱作水稻是传统湿地水稻的两种主要改良方式。了解这些种植方式对水稻根际微生物群及其功能的影响对维持水稻生产力至关重要。本研究的目的是评估三种不同的水稻种植方式(湿地稻、SRI稻和好氧稻)对水稻分蘖期、开花期和成熟期三个关键生育期水稻根际生化特性和细菌群落的影响。采用高通量16S rRNA测序技术对水稻根际土壤有机碳(SOC)、微生物生物量碳(MBC)、脱氢酶活性、底物诱导呼吸(SIR)和代谢商(MQ)进行了测定。水稻根际土壤有机碳、MBC和脱氢酶活性最高,湿地稻次之,好氧稻次之。裁剪方法对SIR和MQ的影响最小。随着种植方式的不同,生育期也显著改变了水稻根际的这些生物学特性。3种水稻种植方式的有机碳含量和脱氢酶活性在开花期最高,MBC含量和SIR在分蘖期最高。基于16S rRNA基因测序的细菌群落分析显示,种植方式和生育期对根际微生物群落组成有显著影响。但不同种植方式对生育期的影响不明显。种植方式对变形菌门、拟杆菌门和拟绿杆菌门的丰度有显著影响,而生长阶段对变形菌门、放线菌门、蓝藻门、厚壁菌门、拟绿杆菌门的丰度有显著影响。基于这些结果,与湿地水稻和有氧水稻相比,SRI方法使根际菌群多样化程度更高,土壤中的碳含量更高,脱氢酶活性也更高。这项研究加深了我们对不同种植方式如何影响植物-微生物相互作用以及对水稻整体生产力和土壤健康的影响的理解。
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Information for contributors to PEDOSPHERE PEDOSPHERE贡献者的信息
IF 7.3 2区 农林科学 Q1 SOIL SCIENCE Pub Date : 2025-12-01 Epub Date: 2025-11-20 DOI: 10.1016/S1002-0160(25)00135-3
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Pedosphere
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