[1]PENG Li,WANG Ling,LIU Hailong,et al.Effects of Irrigation Conditions on the Soil Salinization Distribution in the Oasis of Arid Area[J].Research of Soil and Water Conservation,2016,23(03):112-118,124.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 03
Page number:
112-118,124
Column:
Public date:
2016-06-28
- Title:
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Effects of Irrigation Conditions on the Soil Salinization Distribution in the Oasis of Arid Area
- Author(s):
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PENG Li, WANG Ling, LIU Hailong, ZHANG Tianyou, LUO Chong
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Department of Geography, College of Science, Shihezi University, Shihezi, Xinjiang 832000, China
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- Keywords:
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soil salinization; irrigation conditions; seasonal differences; Manas River Basin
- CLC:
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S156.4
- DOI:
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- Abstract:
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Soil salinization is widespread in the arid areas. Salt ions under different irrigation distribution change with seasons and depths. Salinization is a dynamic process. Salt ions of soil under different irrigation conditions in summer and autumn in Manas River Basin were analyzed using statistical methods. The results show that the salinity under precipitation is higher than that under the drip irrigation and flooding irrigation. Salt is the most obvious in terms of the seasonal differences. Drip irrigation has great significance in the arid areas, but the effect on restraining salt movement is poor. In autumn, the contents of total salt decrease under drip irrigation and flooding irrigation, while the content of total salt increases under precipitation. Seasonal changes of HCO3-, Na+ and K+ are significant, and the changes of rest ions are not obvious. The salinization types in different depths are unstable due to the flooding, and its seasonal variation is more obvious. Most of the soil CV in this area is medium variation, and it is higher in autumn than summer. Alkaline soil is common in this area with pH ranging from 7.9 to 8.7. It is advised to set up a reasonable irrigation and drainage system, and necessary to do something in soil desalt while drip irrigating so that to prevent the regional soil from salinization.