| Infiltration property of 1～5 year sodic alkaline paddy in west Songnen Plain |
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| DOI：10.7606/j.issn.1000-7601.2008.05.28 |
| Key Words: soda alkali soil dye tracer breakthrough experiment infiltration property |
| Author Name | Affiliation | | LUO Jinming | Northeast Institution of Geography and Agricultural Ecology, Chinese Academy of Science, Changchun, Jilin 130012, China
The Graduate Department of Chinese Academy of Sciences, Beijing 100039, China | | DENG Wei | Institute of Mountain hazards and Environment, Chinese Academy of Science, Chengdu, Sichuan 610041, China | | ZHANG Xiaoping | Northeast Institution of Geography and Agricultural Ecology, Chinese Academy of Science, Changchun, Jilin 130012, China | | LI Xiujun | Northeast Institution of Geography and Agricultural Ecology, Chinese Academy of Science, Changchun, Jilin 130012, China | | SUN Guangyou | Northeast Institution of Geography and Agricultural Ecology, Chinese Academy of Science, Changchun, Jilin 130012, China |
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| Abstract: |
| By applying Brilliant Blue FCF as dye tracer and bromide ion for breakthrough test, the infiltration property of sodic alkaline soil after 1 year and 5 years rice cultivation practice were studied. The results showed that the texture and structure of cultivation layer had significant changes after continuously rice-growing practice. Influenced by physical property of cultivated layer, the penetration depth and infiltration rate of soil solution increased significantly in contrast with control. Dye could infiltrate to 20 cm in 1-year rice plot and the whole cultivated layer after 5-year rice plot. The breakthrough experiment revealed that only 82% influent could penetrate the soil cores in 1-year paddy after 16 h, nevertheless, 95% after 8 h in cores of 5-year paddy, to reach balance with influent approximately. |
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