我国盐渍土(盐碱土)的分布范围广、面积大。由于盐碱地土壤盐分含量高,通透性差,土温上升慢,土壤中好气性微生物活动差,养分释放慢,渗透系数低,所以在盐碱地上进行大树移栽成活率低。在盐碱地工程地段进行大树移栽时,为保证在盐碱地大树移栽有较高的成活率,应对土壤进行改良,选 China’s saline soil (saline-alkali soil) a wide range of distribution, large area. Due to the high salt content, poor permeability, low soil temperature, poor aerobic activity in soil, slow release of nutrients and low permeability coefficient, saline-alkali soil has low survival rate for transplanting large trees. When transplanting large trees in the project of saline-alkali land, in order to ensure a high survival rate of transplanting trees in saline-alkali land, the soil should be improved and selected