Pedosphere 5(4): 363--370, 1995
ISSN 1002-0160/CN 32-1315/P
©1995 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Improvement of soil physical properties with soil conditioners |
| ZHAO Bing-Zi and XU Fu-An |
| Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China) |
| ABSTRACT |
| Effects of non-ionic polyacrylamide (PAM), anionic polyacrylamide (PHP), cationic polyacrylamide (PCA-M), non-ionic polyvinylalcohol (PVA), anionic hydrolyzed polyacrylonitrile( HPAN) and polyethyleneoxide (PE-O) on the physical properties of three different soil types were studied. Content of water-stable aggregates larger than 0.25 mm increased to varying extents for different soils and soil conditioners. Among the six kinds of conditioners, non-ionic polyacrylamide (PAM) was the most effective for red soil while polyethyleneoxide (PEO) the least effective for Chao soil, red soil and yellow-brown soil. Water-stable aggregates increased with the rates of PEO and PAM application (except for PEO treatment of yellow-brown soil) and with the molecular weight of PEO within a certain range. Only evaporation rate of Chao soil decreased after application of PAM and HPAN to Chao soil and red soil. |
| Key Words: soil conditioners, soil physical properties, soil types |
| Citation: Zhao, B. Z. and Xu, F. A. 1995. Improvement of soil physical properties with soil conditioners. Pedosphere. 5(4): 363-370. |
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