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Acta Prataculturae Sinica ›› 2011, Vol. 20 ›› Issue (2): 234-243.

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Analysis of growth and salt accumulation features of Salicornia europaea under different nitrogen and phosphorus levels

WANG Jie-ping1,2,3, TIAN Chang-yan1,3   

  1. 1.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011,China;
    2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3.Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
  • Received:2010-03-29 Online:2011-02-25 Published:2011-04-20

Abstract: Research is driven by the hope of rapidly restoring saline land effectively through improving halophyte biomass and performance in saline areas. The effects of varying levels of N fertilization (0, 75, 150, and 225 kg/ha), and P fertilization (0 and 135 kg/ha) on growth and salt accumulation of Salicornia europaea was studied under field saline conditions in Xinjiang. The aerial biomass, root biomass, seed yield, and salt accumulation increased dramatically with increased N levels. The largest amount of salt absorbed and accumulated by S. europaea was in treatment N225, with 11 534.39 kg/ha recorded, 4.07 times more than in the CK. N225 also had the highest Na+, Cl- and SO42- accumulation. P increased biomass, seed yield, and salt accumulation to some extent, but the differences were not significant. Seed N concentration was significantly increased compared with the CK by raising the N level to 225 kg/ha, but not by increasing P. In addition, there was no significant difference in N concentration in stems and shoots or of P concentration in all three plant organs listed above between the different N and P levels. Salt concentrations in shoots and stems were significantly increased by N, but differences in salt concentrations in stems, assimilation shoots and seeds between P1 and P0 were not significant. The results suggest a good possibility of rapidly restoring saline inland soils by increasing N and P fertilization.

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