CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Effects of organic and inorganic fertilization on soil aggregation in an Ultisol as characterized by synchrotron based X-ray micro-computed tomography
Zhou, Hu; Peng, Xinhua; Perfect, Edmund; Xiao, Tiqiao(肖体乔); Peng, Guanyun
2013
Source PublicationGEODERMA
ISSN0016-7061
Volume195Pages:CONCATENATE(Sheet1!I103,-Sheet1!J103)
AbstractLong-term fertilization practices generally improve soil aggregation through associated increases in organic matter over time. However, the influence of organic versus inorganic fertilization on aggregate structures may be quite different. In this paper, we aimed to quantify the three-dimensional (3D) microstructure of soil aggregates as influenced by different long-term fertilization practices. Soil aggregates with diameters of approximately 5 mm were collected from an Ultisol with a long-term fertilization trial established in 1986. The treatments were no fertilizer (CK), chemical fertilizer (NPK), and chemical fertilizer plus organic manure (NPK + OM). The aggregate microstructure was determined with synchrotron based X-ray micro-computed tomography (SR-mu CT) and digital image analysis techniques. Mean corn yields and soil organic carbon were the highest in NPK + OM, followed by NPK and then by CK. Aggregate stability was highest in NPK + OM, and lowest in NPK. The number of pores, number of pore throats, and number of paths between adjacent nodal pores were all significantly decreased by the NPK + OM treatment relative to the NPK and CK treatments. However, microstructural pore properties were mostly not different between NPK and CM treatments. This study demonstrates that organic fertilization can improve soil aggregation, while inorganic fertilization is ineffective, even after 25 years. The different mechanisms by which organic and inorganic fertilization practices influence soil aggregation deserve further investigation. (c) 2012 Elsevier B.V. All rights reserved.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000316307200003
Citation statistics
Cited Times:85[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13732
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Zhou, Hu,Peng, Xinhua,Perfect, Edmund,et al. Effects of organic and inorganic fertilization on soil aggregation in an Ultisol as characterized by synchrotron based X-ray micro-computed tomography[J]. GEODERMA,2013,195:CONCATENATE(Sheet1!I103,-Sheet1!J103).
APA Zhou, Hu,Peng, Xinhua,Perfect, Edmund,Xiao, Tiqiao,&Peng, Guanyun.(2013).Effects of organic and inorganic fertilization on soil aggregation in an Ultisol as characterized by synchrotron based X-ray micro-computed tomography.GEODERMA,195,CONCATENATE(Sheet1!I103,-Sheet1!J103).
MLA Zhou, Hu,et al."Effects of organic and inorganic fertilization on soil aggregation in an Ultisol as characterized by synchrotron based X-ray micro-computed tomography".GEODERMA 195(2013):CONCATENATE(Sheet1!I103,-Sheet1!J103).
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