Abstract
The Simultaneous Heat and Water model (SHAW) was used to simulate the dynamic variation of water-heat-salt in the process of soil freezing-thawing for three kinds of salinized soil, with different degrees of saline, in the Inner Mongolia Hetao Irrigation District. The results show that the accumulated evaporation of serious saline soil is the largest among the three kinds of soils. It is caused by the high content of salt which can depress the ice point and prolong the period of soil freezing. Consequently, it results in the loss of soil moisture in next year and affects the germination of crop. The 30%-50% of quota irrigation water in autumn will be deposited in soil layer within the depth of 1.0 m when it excesses 150 mm. The effect of autumn irrigation quota and schedule affecting the soil evaporation and water stored in soil layer happen to the period before freezing of soil only.
| Original language | English |
|---|---|
| Pages (from-to) | 403-412 |
| Number of pages | 10 |
| Journal | Shuili Xuebao/Journal of Hydraulic Engineering |
| Volume | 40 |
| Issue number | 4 |
| Publication status | Published - Apr 1 2009 |
Keywords
- Autumn irrigation
- Freezing-thawing of soil
- Hetao Irrigation District
- Simultaneous Heat and Water (SHAW) model
- Water-heat-salt transfer
ASJC Scopus subject areas
- Water Science and Technology
- Energy Engineering and Power Technology
- Mechanical Engineering