Pedosphere 14(3): 331--337, 2004
ISSN 1002-0160/CN 32-1315/P
©2004 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Rice yield and water use as affected by soil management practices |
WANG Xiao-Ying1,2 , XIE Hong-Tu1,2, LIANG Wen-Ju1 and WEN Da-Zhong1 |
1 Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016 (China). E-mail: wangxy0917@yahoo.com.cn
2 Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China) |
| ABSTRACT |
| A field experiment was conducted at the Shenyang Experimental Station of Ecology, Chinese Academy of Sciences, to study the effects of soil management practices on water use and rice (Oryza sativa L.) yield in an aquic brown soil during 2001 and 2002. A completely random experimental design with three replications was employed, having four soil management practices as treatments, namely: an undisturbed plow layer (CK), a thin plastic film (TN), a thick plastic film (TI) and subsoil compacting (CP). Results indicated no significant differences among all treatments for rice biomass and grain yields. Also, water consumption was about the same for treatments TN and CK, however the treatments TI and CP were much lower with more than 45% and 40% of the irrigation water in the treatments TI and CP, respectively, saved each year compared to CK. Therefore, water use efficiency was higher in the treatments TI and CP. These results will provide a scientific basis for the water-saving rice cultivation. |
| Key Words: evapotranspiration, percolation, rice, soil management, water use efficiency |
| Citation: Wang, X. Y., Xie, H. T., Liang, W. J. and Wen, D. Z. 2004. Rice yield and water use as affected by soil management practices. Pedosphere. 14(3): 331-337. |
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