| Analysis of salt and water movements in coastal saline soil in seawater intrusion region under groundwater irrigation |
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| DOI：10.7606/j.issn.1000-7601.2006.04.09 |
| Key Words: irrigation seawater intrusion ion composition characteristics of salt and water movement |
| Author Name | Affiliation | | CHEN Ming-da | College of resources and environmental sciences Nanjing Agricultural University,Nanjing,Jiangsu 210095,China | | QI Chang-hai | Laizhou Science and Technology Bureau,Laizhou,Shandong 261418,China | | ZHAO Geng-mao | College of resources and environmental sciences Nanjing Agricultural University,Nanjing,Jiangsu 210095,China | | LIU Zhao-pu | College of resources and environmental sciences Nanjing Agricultural University,Nanjing,Jiangsu 210095,China |
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| Abstract: |
| The characteristics of salt and water movements were studied in Laizhou Gulf region,where seawater intrusion became a severe problem in recent years.The results showed that,after irrigation for four times,salt content and ion composition in the soil changed greatly,but soil secondary salinization was not aroused.When happened with heavy rain(>20 mm), the total soluble salts at the root zone were rapidly leached down.Therefore,sodium absorption ratio(SAR) in soil solution was reduced,but on the contrary,soluble sodium percentage(SSP) and sodium-calcium-magnesium ratio(SDR) were increased. |
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