Effects of Salt-alkaline Mixed Stress on Growth of Kochia sieversiana
Kochia sieversiana,a natural halophyte was chosen as the experimental material for this study.We simulative ecological condions of alkaline soils.The seedlingd of K.Sieversiana were treated by mixing two neutral salts(NaCl and Na2SO4) and two alkali salts(NaHCO3 and Na2CO3) in various proportions.The treatments included a salt concentration range of 80 to 400 mmol·L-1 and pH values from 6.93 to 10.68.The relative growth rate(RGR) and other physiological indices of stressed seedlingd were determined and analyzed,to explore effects of salt-alkaline mixed stress on growth of K.Sieversiana and analyzed the effect factors of stress.