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以甜菜品种KWS0143为供试材料,采用盆栽试验,设4个土壤Na2CO3浓度处理(0、4、8和12g/kg,分别以CK、A、B和C表示),分析Na2CO3胁迫对甜菜幼苗生长、根系活力的影响。结果表明,随着盐碱浓度的增加,土壤电导率显著升高,土壤p H显著增大;与对照相比Na2CO3胁迫甜菜幼苗的出苗率下降幅度分别为3.7%、13.9%、25.2%,根系的长度、表面积、根体积以及根系活力先增大后减小,A处理甜菜幼苗根系的长度、表面积、根体积以及根系活力均显著高于对照,而B和C处理甜菜幼苗根系的长度、表面积、根体积以及根系活力显著受到抑制(P<0.05),说明低浓度的盐碱促进了甜菜幼苗的生长,提高了根系活力。
Using the sugar beet variety KWS0143 as test material, four soil Na2CO3 concentrations (0, 4, 8 and 12 g / kg, respectively, CK, A, B and C) were used to study the effects of Na2CO3 stress on the growth of sugar beet , Root vitality. The results showed that with the increase of saline concentration, soil electrical conductivity increased significantly and soil p H increased significantly. Compared with the control, the emergence rate of sugar beet seedlings decreased by 3.7%, 13.9% and 25.2%, respectively The length, surface area, root volume and root activity of the beet seedlings first increased and then decreased. The root length, surface area, root volume and root activity of beet seedling A treated with A and B were significantly higher than that of the control , Root volume and root activity were significantly inhibited (P <0.05), indicating that low concentrations of salt and alkali promoted the growth of sugar beet seedlings and increased root activity.