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Temperature- and duration-dependent rice straw-derived biochar: Characteristics and its effects on soil properties of an Ultisol in southern China

ESI高被引SCI-EEI
WOS被引频次:196
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成果类型:
期刊论文
作者:
Peng, X.;Ye, L.L.;Wang, C.H.;Zhou, H.;Sun, B.
通讯作者:
Peng, X.(xhpeng@issas.ac.cn)
作者机构:
[Peng, X.; Sun, B.; Zhou, H.] CAS, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China.
[Peng, X.] CAS, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 Beijing E Rd, Nanjing 210008, Jiangsu, Peoples R China.
[Ye, L.L.; Wang, C.H.] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构:
[Peng, X.] CAS, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 Beijing E Rd, Nanjing 210008, Jiangsu, Peoples R China.
语种:
英文
关键词:
Aggregate stability;Biochar;C sequestration;Soil fertility;Ultisol
期刊:
Soil and Tillage Research
ISSN:
0167-1987
年:
2011
卷:
112
期:
2
页码:
159-166
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:农业科学;WOS学科类别:Soil Science
入藏号:
WOS:000288689800007;EI:20110713671011
机构署名:
本校为其他机构
院系归属:
资源环境学院
摘要:
Applying biochar to soils may cause a win-win situation resulting in C sequestration and soil fertility improvement. The effect may be more evident in highly weathered and infertile tropical soils, but will be dependent on biochar quality. An Ultisol, typical to southern China, was used to evaluate amendment with biochars produced by a range of temperatures and durations, to investigate its effects on soil properties and plant growth. Rice straw-derived biochars were charred at temperatures from 250 to 450 degrees C for between 2 and 8 h. The increase of temperature caused smaller less structured (as viewed by SEM) fragments to form with less 0, H and aliphatic C functional groups, but more aromatic C as indicated by infrared spectroscopy. The mean residence time of biochars under controlled conditions (25 degrees C, 40% field capacity) was estimated from 244 to 1700 years, generally increasing with charring temperature and duration. Amendment of 1% biochar increased pH by 0.1-0.46 (P < 0.01) and CEC by 3.9-17.3% (P < 0.05), but had no effect on aggregate stability. In pot trials maize biomass was increased by 64% (without NPK) to 146% (with NPK) after biochar amendment. The study emphasizes that amendment with biochar can improve soil fertility at least in the short term. Future studies focusing on the persistence of biochar fertility in the field must explicitly take into account additional factors to transfer this technology. (C) 2011 Elsevier B.V. All rights reserved.
参考文献:
Novak JM, 2009, SOIL SCI, V174, P105, DOI 10.1097/SS.0b013e3181981d9a
Asai H, 2009, FIELD CROP RES, V111, P81, DOI 10.1016/j.fcr.2008.10.008
Keiluweit M, 2010, ENVIRON SCI TECHNOL, V44, P1247, DOI 10.1021/es9031419
Lehmann J, 2003, PLANT SOIL, V249, P343, DOI 10.1023/A:1022833116184
Cheng CH, 2006, ORG GEOCHEM, V37, P1477, DOI 10.1016/j.orggeochem.2006.06.022

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