2002 关键词：碱菀；形态结构；土壤总含盐量 [gap=1044]Key words ：Tripolium vulgare Nees;morphology and structure;total soil salt content
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土壤含盐量是随质地和滩面水的总盐量的变化而不同，如潮滩沙土由小于0.5%至3.3%。
The salinity of soils varies greatly with texture of soils and total salinity of seawater and ranges from< 0.5% (sandy tidal flat soil)to 3.3%.
含盐量是指土壤溶液中所存在的盐类的总浓度。
Salinity refers to the total concentration of salts present in the soil solution.
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