| This article has been：Browse 1870Times Download 2291Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.2019186 |
|
| Experimental study on water and solute movement in soil grown with desert plant haloxylon ammodendron under drip irrigation using saline water |
|
LIU Saihua, YANG Guang, ZHANG Qiuying, HE Xinlin,XUE Lianqing， WANG Zelin, LI Fadong, REN Futian
|
|
1. School of Water Conservancy and Architectural Engineering, Shihezi University/Key Laboratory of Modern Water-saving Irrigation Corps, Shihezi 832000, China; 2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 3. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; 4. Institute of Geography and Resources, Chinese Academy of Sciences, Beijing 100101, China; 5. University of Chinese Academy of Sciences, Beijing 100049, China
|
| Abstract: |
| 【Objective】Saline groundwater in arid and semi-arid regions could be used as an alternative water source to irrigate crops, and understanding its impact on water and solute dynamics in soil is essential to safeguard its use. In this work we present the results of an experimental study on water and solute movement in soil grown with desert plant Haloxylon ammodendron under drip irrigation using saline water.【Method】The experiment was conducted in lysimeters and during the experiment, we measured soil moisture, soil salinity, contents of different ions, and other hydro-chemical propertied of the Haloxylon ammodendron. The data were analyzed using Shukalev method and the piper trigram.【Result】①Soil salt content was positively correlated to the salinity of the irrigating water and accumulated in depth of 60~80 cm with a maxima of 6.1 g/kg. ②The content of SO2- 4, Cl-, K+ and Na+ in soil varied significantly as the salinity of the irrigating water increased. After irrigation, the cations in soil changed gradually from Ca2+ dominant to Na+ dominant, anions from SO2- 4dominant to Cl- dominant, and soil water from SO2- 4-Ca2+·Mg2+ type to SO2- 4·Cl--Na+ type.【Conclusion】The movement and distribution of water and solute in soil under drip irrigation using saline water was experimentally studied in lysimeters and the results provide guidance to saline water irrigation management in arid and semi-arid regions. |
| Key words: saline water; haloxylon ammodendron; water and salt migration; hydro-chemical property |
|
|
