| This article has been：Browse 1867Times Download 2109Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.2017.11.009 |
|
| Effects of Subsurface Pipe Drain on Soil Desalination and Water Use Efficiency of Oil Sunflower |
|
SHI Jia, TIAN Juncang, ZHU Lei
|
|
College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China; Center of Engineering Research on Efficient Utilization of Water Resources in Modern Agriculture in Arid Regions(Ministry of Education) , Yinchuan 750021, China; Ningxia Engineering Technology Research Center of Water-saving Irrigation and Water Resources for Modern Agriculture in Arid Areas(Ministry of Education), Yinchuan 750021, China
|
| Abstract: |
| Taking oil sunflower as the model plant, we comparatively studied the impact of subsurface pipe drain and non-pip drain on soil desalination and water use efficiency of the plant. The experiment was conducted in Miaotai, Huinongin Ningxia and the drained water was pumped using solar-powered pumps. During the experiment, we measured soil salinity, change of groundwater table, as well as the yield. The results showed that, compared with non-pipe drain, in the area controlled by the subsurface pipe drain, the groundwater table dropped by 0.09 m, salt content in groundwater decreased by 9.79, soil salinity decreased by 13.64%, and the yield increased by 8.10%. In addition, it increased the water productivity by 8.40% and the water production efficiency by 9.86%. |
| Key words: solar energy; subsurface pipe drainage; oil sunflower; water-salt regulation; soil salinity; water production efficiency |
|
|
