Pedosphere 6(2): 155--161, 1996
ISSN 1002-0160/CN 32-1315/P
©1996 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Effects of temperature and drying and wetting alternation on ammonium fixation in manured loessial soil
FAN Xiao-Lini1, ZHANG Yi-Ping1 and LI Ling2
1 Soil Science Department of Northwestern Agricutural Universitg, Yangliny 71210(China)
2 Institute of Soil and Water Conservation, Academia Sinica and Ministry of Water Conservancy, Yangling 712100(China)
ABSTRACT
      Effects of temperature and drying and wetting alternation (DWA) on ammonium fixation in manured loessial soil were studied by means of Batch Equilibrium with varying concentration solutions of ammonium chloride, ammonium fixation time, and soil clay contents. The purpose of the research was to find out the pattern of ammonium fixation affected by the varying factors. The results showed a remarkable variation in ammonium fixation. Fixed ammonium increased with temperature and treatments of DWA. The ammonium fixation in manured loessial soil was characterized by the effect of temperature and DWA.
Key Words:  ammonium fixation, effect of DWA, effect of temperature, manured loessial soil
Citation: Fan, X. L., Zhang, Y. P. and Li, L. 1996. Effects of temperature and drying and wetting alternation on ammonium fixation in manured loessial soil. Pedosphere. 6(2): 155-161.
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