Pedosphere 4(2): 127--135, 1994
ISSN 1002-0160/CN 32-1315/P
©1994 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effect of Organic Manure Application on Physical Properties andHumus Characteristics of Paddy Soil |
| DOU SEN1, CHEN EN-FENG1, XU XIANG-CHENG1, ZHANG JI-HONG1, LIHUAN-ZHEN1 |
| Department of Soil Science and Agrochemistry. Jilin Agricultural University, Changchun 130118 (China) |
| ABSTRACT |
| Long-term field experiment was established in 1978 on a coastal paddy soil to determine the effect of application of pig manure, rice straw and chemical N fertilizer on the physical property and humus characteristics of soil. Results showed that the porosity, the microstructural coefficient, the reactivities of organic C and N, the OlogK value, the degree of oxidation stability, the contents of o-alkyl C and alkyl C, and the ratio of aliphatic C to aromatic C of humic acid from soils received organic manure increased; whereas, the ratio of<10μm to >10μm of microaggregates, the humification degree of humus, the degree of organo-mineral complexation, the number-average molecular weight, the C/H ratio, the contents of carboxyl and aromatic C of HAs in them decreased. These results indicated that the application of organic manure not only improved the physical property of the paddy soil but also made the HA more aliphatic in structure and younger in origin. |
| Key Words: |
| Citation: Dou, S., Chen, E. F., Xu, X. C., Zhang, J. H. and LIHUAN-ZHEN. 1994. Effect of Organic Manure Application on Physical Properties andHumus Characteristics of Paddy Soil. Pedosphere. 4(2): 127-135. |
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