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Does Thermal Carbonization (Biochar) of Organic Material Increase More Merits for Their Amendments of Sandy Soil? : Volume 6, Issue 1 (14/02/2014)

By Wu, Y.

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Book Id: WPLBN0004022009
Format Type: PDF Article :
File Size: Pages 24
Reproduction Date: 2015

Title: Does Thermal Carbonization (Biochar) of Organic Material Increase More Merits for Their Amendments of Sandy Soil? : Volume 6, Issue 1 (14/02/2014)  
Author: Wu, Y.
Volume: Vol. 6, Issue 1
Language: English
Subject: Science, Solid, Earth
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description: Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS), Yantai 264003, China. Organic materials (e.g. furfural residue) are generally believed to improve the physical and chemical properties of the soils with low fertility. Recently, biochar have been received more attention as a possible measure to improve the carbon balance and improve soil quality in some degraded soils. However, little is known about their different amelioration of a sandy saline soil. In this study, 56d incubation experiment was conducted to evaluate the influence of furfural and its biochar on the properties of saline soil. The results showed that both furfural and biochar greatly reduced pH, increased soil organic carbon (SOC) content and cation exchange capacity (CEC), and enhanced the available phosphorus (P) in the soil. Furfural is more efficient than biochar in reducing pH: 5% furfural lowered the soil pH by 0.5–0.8 (soil pH: 8.3–8.6), while 5% biochar decreased by 0.25–0.4 due to the loss of acidity in pyrolysis process. With respect to available P, 5% of the furfural addition increased available P content by 4–6 times in comparison to 2–5 times with biochar application. In reducing soil exchangeable sodium percentage (ESP), biochar is slightly superior to furfural because soil ESP reduced by 51% and 43% with 5% furfural and 5% biochar addition at the end of incubation. In addition, no significant differences were observed between furfural and biochar about their capacity to retain N, P in leaching solution and to increase CEC in soil. These facts may be caused by the relatively short incubation time. In general, furfural and biochar have different amendments depending on soil properties: furfural was more effectively to decrease pH and to increase available P, whereas biochar played a more important role in increasing SOC and reducing ESP of saline soil.

Does thermal carbonization (Biochar) of organic material increase more merits for their amendments of sandy soil?

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