Pedosphere 7(1): 79--86, 1997
ISSN 1002-0160/CN 32-1315/P
©1997 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Low-molecular-weight aliphatic acids in soils incubated with plant residues under different moisture conditions
SHEN A-Lini1, LI Xue-Yuan2, T. KANAMORI3, S. 0N03 and T. ARA03
1 Soil and Fertilizer Institute, Hemal Academy of Agricultural Sciences, Zhengzhou 450002 (China)
2 Department of Soil Science and Agricultural Chemistry, Huazhong Agricultural University, Wuhan 430070 (China)
3 Laboratory of Upland Soid and Fertilizer, Department of Soid and Fertilizer, National Agricudture Research Center, Tsukuba 305 (Japan)
ABSTRACT
      Incubation experiments were conducted to investigate the dynamics of low-molecular-weight aliphatic acids in two andosols with and without plant materials. Results showed that amount of low-molecular-weight aliphatic acids in soils alone varied considerably with water regime under which the soil was incubated, duration of incubation and soil organic matter content, ranging from 257~860 μmol kg-1 soil , of which 19%~33% was in free state. Incorporation of plant materials increased greatly both the amount and number of members of low-molecular-weight aliphatic acids, and also the proportion of low-molecular-weight aliphatic acids occurred in free state. Generally, among these aliphatic acids detected, acetic, propionic, glyoxalic and formic acids were predominant.
Key Words:  andosol, low-molecular-weight aliphatic acids, plant residue
Citation: SHEN A-Lini, Li, X. Y., Kanamori, T., 0n0, S. and Ara0, T. 1997. Low-molecular-weight aliphatic acids in soils incubated with plant residues under different moisture conditions. Pedosphere. 7(1): 79-86.
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