中文摘要：

为了解天津市滨海地区吹填淤泥的化学性质以便进行土壤改良,比较分析其与天津市盐碱土、湿潮土、农田土和天津市周边森林土化学性质的差异,在此基础上探讨影响土壤化学性质的因素.结果表明：（1）吹填淤泥的速效磷、速效钾含量仅低于农田土,全氮含量低于农田土和森林土而高于盐碱土和湿潮土;（2）吹填淤泥的有机质含量低于森林土、农田土和湿潮土;（3）含盐量方面,5种土壤类型的顺序为吹填淤泥〉盐碱土〉湿潮土〉森林土〉农田土,吹填淤泥与其他类型土壤之间的差异具有统计学意义（p≤0.05）;（4）吹填淤泥中Na＋＋K＋离子含量是Ca＋离子含量的32倍,Cl-含量是HCO3-含量的52倍,吹填淤泥的阳离子交换量仅高于盐碱土而低于其他3种类型的土壤.总的来看,吹填淤泥养分含量较高,但含盐量也高,这是制约淤泥成土的主要限制因子.

英文摘要：

To learn the chemical properties of dredger filled mud in Binhai area to improve it, the comparison of chemical prop- erties between dredger filled soil and saline-alkafi soil, moist soil, farmland soil and forest soil was conducted in this paper. Fur- thermore, the factors which influence the soil chemical properties were researched. The results were as follows ： （ 1 ） The content of available P and available K of the dredger filled mud were only lower than those of farmland soil, and the content of total ni- trogen was higher than those of saline-alkali soil and moist soil; （ 2 ） The content of organic matter in dredger filled mud was low- er than those of farnlland soil, forest soil and moist soil ; （ 3 ） As for the content of salinity, the order of five soil types was dredger filled mud〉saline-alkali soil〉moist soil〉forest soil〉farmland soil, and the difference between dredger filled mud and the other four soil types was statistic （p ≤ 0.05 ） ; （4） The ion content of Na＋＋K＋ was 32 times higher than the content of Ca2＋, and the con- tent of C1-was 52 times bigger than those of the content of HCO3-. The catin exchange capacity of dredger filled mud was only higher than those of saline-alkali soil and lower than the other three soil types. On the whole, the dredger filled mud has rather higher nutrient content, whereas the salt content is very high, which is a major limiting factor to soil forming of dredger filled mud.