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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (5): 1420-1425    DOI: 10.7522/j.issn.1000-694X.2013.00207
Biology and Soil     
Desalination Effect of Halophytes in Heavily Salinized Soil of Karamay, Xinjiang, China
ZHAO Zhen-yong, ZHANG Ke, WANG Lei, WANG Ping, TIAN Chang-yan
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
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Abstract  

The effect of salt-resistant plants on improving heavily salinized soil and reducing salt content in the tillage layer was evaluated in the newly cultivated, saline land in the Karamay Agricultural Development Region, Xingjiang, China. Annual halophytes—Salicornia europaea and Suaeda salsa were grown under drip irrigation, and then above-ground plant biomass, content of K+, Na+, Ca2+, Mg2+, Cl- and SO2-4, and total salt content in soil were determined. The results indicated that under irrigation conditions, biomass of S. europaea and S. salsa was 11 044.37 kg·hm-2 and 19 119.26 kg·hm-2 respectively, and ash-free salt content of above-ground plant parts was 4 709.98 kg·hm-2 and 5 184.96 kg·hm-2, respectively. After harvest, total salt content in 0-30 cm soil layer of treatment of S. europaea, S. salsa and the bare land decreased by 55.62%, 32.98% and 20.79%, respectively; and that in 30-60 cm soil layer of treatment of S. europaea, S. salsa decreased by 21.82% and 29.16% respectively, while the control increased by 18.31%. S. europaea and S. salsa showed strong uptake capacity to Na+, Cl- and SO2-4, especially for Cl-. Although the content of SO2-4 in both plants was equal, the content of Na+ and Cl- in S. europaea was 2.33 times and 2.22 times that in S. salsa, respectively. The ability of S europaea to accumulate more Na+ and Cl- made it a better choice for reducing chloride salt in soil. Our study suggested that planting salt-resistant plants could have significant desalination effects on soil in newly cultivated land in a saline desert.

Key words:  saline soil      Salicornia europaea      Suaeda salsa      soil desalination     
Received:  09 July 2012      Published:  10 August 2012
ZTFLH:  S156.4  

Cite this article: 

ZHAO Zhen-yong, ZHANG Ke, WANG Lei, WANG Ping, TIAN Chang-yan. Desalination Effect of Halophytes in Heavily Salinized Soil of Karamay, Xinjiang, China. JOURNAL OF DESERT RESEARCH, 2013, 33(5): 1420-1425.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00207     OR     http://www.desert.ac.cn/EN/Y2013/V33/I5/1420

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