| Soil salinity dynamics in salt wasteland soil with drip irrigation under plastic film |
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| DOI：10.7606/j.issn.1000-7601.2018.06.02 |
| Key Words: drip irrigation under plastic film salt wasteland soil salinity groundwater level |
| Author Name | Affiliation | | ZONG Han | College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling, Shaanxi 712100, China
Research Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China | | GAO Long | Huangbizhuang Reservoir Administration of Hebei, Shijiazhuang, Hebei 050024, China | | WANG Ya-qin | Paotai Soil Improvement Test Station of the Eighth Division,Xinjiang Production and Construction Corps,Shihezi, Xinjiang 832066, China | | ZHAO Zhi-qiang | Research Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China
College of Environmental Science and Engineering, Chang’an University, Xi’an, Shaanxi 710054, China | | WANG Zi-tian | Research Institute of Water and Development, Chang’an University, Xi’an, Shaanxi 710054, China
College of Environmental Science and Engineering, Chang’an University, Xi’an, Shaanxi 710054, China |
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| Abstract: |
| Based on the experiment data in the irrigation area of Xiayedi and Jingouhe,and data of intra-year and inter-year of the dynamic change of soil salinity and its relationship with groundwater level, we investigated the dynamics of soil salinity in salt wasteland soil with drip irrigation under film. The results indicated that: During the inter-year,there was a stable salt accumulated layer at about 60~100 cm deep in salt wasteland soil with drip irrigation under film after 6~8 years. The soil salinity of the irrigation area of Xiayedi and Jingouhe in this layer was almost constant around 0.5% and 0.8%, respectively, however, the soil salinity varied in the layers above 60 cm. The intra-year soil salinity had a trend of decreasing with growing seasons and particularly in the layer of 0~60 cm. In spring and autumn,the soil salt showed a rising trend. For inter-years,the soil salinity of the irrigation area of Xiayedi and Jingouhe was pretty constant around 0.49% and 0.77%, respectively, and the water level was around 3.60 m and 2.26 m deep.The soil salinity increased with decreasing groundwater level, idicating that the soil salinity in Shihezi reclamation area was significantly affected by the groundwater level. |
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