钠硅互作提高白刺抗旱性的研究  

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

作　　者：段娇娇[1] 杨自辉 康建军 于建龙[1] 王锁民[1] 

机构地区：[1]兰州大学草地农业科技学院草地农业生态系统国家重点实验室,甘肃兰州730020 [2]甘肃民勤荒漠草地生态系统国家野外科学观测研究站,甘肃民勤733300 [3]甘肃省林业科学研究院,甘肃兰州730000

出　　处：《草业学报》2013年第2期203-210,共8页Acta Prataculturae Sinica

基　　金：国家农业科技成果转化项目(2009GB23600512);国家自然科学基金(31072073);教育部博士学科点专项科研基金(20090211110001)资助

摘　　要：采用盆栽试验,研究了单施NaCl和钠硅互作施用(NaCl和Na2SiO3)对白刺生长及抗旱性的影响。结果表明,1.2g/kg NaCl和0.3g/kg NaCl+0.72g/kg Na2SiO3互作施用均能显著促进白刺的生长并提高其抗旱性。单施NaCl时,1.2g/kg NaCl处理培育的白刺株高、根长和干重与对照相比分别增加了47%,25%和236%。钠硅互作施用时,0.3g/kg NaCl+0.72g/kg Na2SiO3互作处理对促进白刺生长并提高其抗旱性的效果要比单独施用0.3g/kg NaCl效果更为显著;与单施0.3g/kg NaCl处理相比,0.3g/kg NaCl+0.72g/kg Na2SiO3互作处理白刺株高、根长和干重分别增加了81%,43%和193%。这表明适量水平的NaCl和Na2SiO3互作施用要比单独施用NaCl更有效地促进白刺生长并提高其抗旱性。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.

关 键 词：白刺 NACL 钠硅互作 抗旱性 

分 类 号：S793.9[农业科学—林木遗传育种]