Effect of Na and Si interactions on the drought resistance of Nitrarial tangutorum

Abstract

Abstract: The effects on growth and drought resistance of potted Nitrarial tangutorum treated with different concentrations of NaCl and Na₂SiO₃ were studied. Growth of N. tangutorum was promoted and drought resistance improved by 1.2 g/kg NaCl alone or a 0.3 g/kg NaCl+0.72 g/kg Na₂SiO₃ combination. Compared with the control, application of NaCl alone increased plant height, root length and dry weight by 47%, 25% and 236%, respectively. Application of the NaCl/Na₂SiO₃ combination effectively promoted growth and improved drought resistance of N. tangutorum more than the NaCl treatment. Compared with the NaCl treatment, the combination treatment increased plant height, root length and dry weight by 81%, 43% and 193%, respectively. It is suggested that moderate levels of Na and Si combinations could more effectively promote growth and improve drought resistance of N. tangutorum than the application of NaCl alone.

CLC Number:

DUAN Jiao-jiao, YANG Zi-hui, KANG Jian-jun, YU Jian-long, WANG Suo-min. Effect of Na and Si interactions on the drought resistance of Nitrarial tangutorum[J]. Acta Prataculturae Sinica, 2013, 22(2): 203-210.

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