| Effects of saline water irrigation on soil salt dynamics and yields of wheat and maize in low plain of Hebei province |
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| DOI：10.7606/j.issn.1000-7601.2013.02.25 |
| Key Words: saline water irrigation soil salt wheat maize yield |
| Author Name | Affiliation | | JIAO Yanping | Hebei Provincial Academy of Water Resources, Shijiazhuang, Hebei 050051, China | | GAO Wei | Hebei Provincial Academy of Water Resources, Shijiazhuang, Hebei 050051, China | | PAN Zenghui | Hebei Provincial Academy of Water Resources, Shijiazhuang, Hebei 050051, China | | LI Kejiang | Dry-land Farming Institute, Hebei Academy of Agriculture and Forestry Sciences, Hengshui, Hebei 053000, China | | SHEN Guangcheng | Quzhou Experimental Station, China Agricultural University, Handan, Hebei 057250, China |
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| Abstract: |
| A 3-year field experiment was conducted in Hengshui and Quzhou experimental stations in the low plain of Hebei province to investigate the effects of border irrigation with 2 g·L-1 saline fresh blending water on soil salt dynamics and yields of wheat and maize. The results showed that the irrigation with 2 g·L-1 saline water caused a significant salt accumulation at the principal root layer (0～40 cm) and 0～120 cm soil layer during the 3-year irrigation period. Compared with fresh water irrigation, the 3-year average soil ECe value under saline water irrigation in Hengshui and Quzhou was increased by 0.092 dS·m-1 and 0.091 dS·m-1 respectively at 0～40 cm root layer, and by 0.051 dS·m-1 and 0.147 dS·m-1 respectively at 0～120 cm soil layer after the harvesting of winter wheat; it was increased by 0.059 dS·m-1 and 0.127 dS·m-1 respectively at 0～40 cm root layer, and by 0.082 dS·m-1 and 0.131 dS·m-1 respectively at 0～120 cm soil layer after the harvesting of summer maize. On the whole, there was no significant difference in the yields of winter wheat and summer maize between the freshwater irrigation and the 2 g·L-1 saline water irrigation. So from the perspective of long-term safe use of the saline shallow groundwater to relieve the crisis of freshwater resources, the constant monitoring on soil salt dynamics and regular salt-leaching by freshwater irrigation is very essential. |
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