Pedosphere 17(5): 619--623, 2007
ISSN 1002-0160/CN 32-1315/P
©2007 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Short-term effects of tillage practices on organic carbon in clay loam soil of northeast China
LIANG Ai-Zhen1,2, ZHANG Xiao-Ping1, FANG Hua-Jun1,2, YANG Xue-Ming3 and C. F. Drury3
1 Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012 (China). E-mail: liang7973@yahoo.com.cn
2 Graduate School of the Chinese Academy of Sciences, Beijing 100049 (China)
3 Greenhouse & Processing Crops Research Centre, Agriculture & Agri-Food Canada, Harrow, Ontario, N0R 1G0 (Canada)
ABSTRACT
      A tillage experiment, consisting of moldboard plow (MP), ridge tillage (RT), and no-tillage (NT), was performed in a randomized complete block design with four replicates to study the effect of 3-year tillage management on SOC content and its distribution in surface layer (30 cm) of a clay loam soil in northeast China. NT did not lead to significant increase of SOC in topsoil (0-5 cm) compared with MP and RT;however, the SOC content in NT soil was remarkably reduced at a depth of 5-20 cm. Accordingly, short-term (3-year) NT management tended to stratify SOC concentration, but not necessarily increase its storage in the plow layer for the soil.
Key Words:  clay loam soil, moldboard plow, no-tillage, ridge tillage, soil organic carbon
Citation: Liang, A. Z., Zhang, X. P., Fang, H. J., Yang, X. M. and Drury, C. F. 2007. Short-term effects of tillage practices on organic carbon in clay loam soil of northeast China. Pedosphere. 17(5): 619-623.
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