| Effect of irrigation with sea ice water on soil salinity and corn yield |
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| DOI：10.7606/j.issn.1000-7601.2010.05.31 |
| Key Words: sea ice water irrigation salinity corn yield |
| Author Name | Affiliation | | WU Zhizheng | State Key Laboratory of Earth Surface Process and Resources Ecology, Beijing 100875, China | | GU Wei | State Key Laboratory of Earth Surface Process and Resources Ecology, Beijing 100875, China | | XU Yingjun | State Key Laboratory of Earth Surface Process and Resources Ecology, Beijing 100875, China | | LIN Yebin | State Key Laboratory of Earth Surface Process and Resources Ecology, Beijing 100875, China | | ZHANG Guoming | College of Geography and Remote Sensing, Beijing Normal University, Beijing 100875, China |
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| Abstract: |
| The salinity of Bohai sea ice is usually 4 to 11 g/kg and sea ice can be used for irrigation after desalination. Farmland experiment was carried out with different irrigation water salinity (1 g/kg，3 g/kg and 5 g/kg) and different irrigation water quantity (450 m3/hm2，900 m3/hm2，1 350 m3/hm2). The results showed that (1) At the end of the experiment, the soil salinity of 10 disposals didn't increase remarkably on account of the washing and leaching of precipitation; and the soil salinity was also maintained at a lower level in the second year of salt return peak. (2) The corn yield dropped lightly with the increasing of the irrigation salinity. When the irrigation water salinity was 1 g/kg, the corn yield would increase along with the increasing irrigation water quantity. When the irrigation water salinity was 3 g/kg or 5 g/kg, the corn yield would decrease along with the increasing irrigation water quantity. The corn stalk yet showed the similar law. |
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