| Soil moisture and salinity changes in cotton field of drip irrigation during freeze-thaw period |
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| DOI：10.7606/j.issn.1000-7601.2017.04.19 |
| Key Words: drip irrigation freezing and thawing period moisture salinity variation |
| Author Name | Affiliation | | YOU Guo-dong | College of Water Conservance and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
Xiaokaihe Bureau of Yellow River Diversion Irrigation Management, Binzhou, Shandong 256600, China | | HUDan·Tumarerba | College of Water Conservance and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | XoLpan·KarJan | College of Water Conservance and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
Planning and Designing Bureau of Xinjiang Water Conservancy Station, Urumqi, Xinjiang 830000, China | | WU Yong-tao | College of Water Conservance and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | LI Zhuo-ran | College of Water Conservance and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| The changes of soil salinity, moisture and temperature of film drip irrigation cotton field in north area from November 2014 to March 2015 were analyzed. Changes of soil water, heat and salt and their coupling relationship during freezing and thawing period were measured. The results revealed that during freezing and thawing period, the water content in the surface and deep soil was higher while middle layer had low water content. Degree of salinity increased with the soil depth, and was significantly enriched in surface soil. During freezing and thawing period, the distribution of water and salinity of soil profile was significantly changed. Soil water potential gradient and soil temperature gradient were the principal factors influencing soil water and salt migration, and soil water, heat and salt changed coordinately. |
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