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为了探讨人工林对黄河三角洲滨海盐碱地土壤理化性质的改良效果,采用野外取样和室内分析测定相结合的方法,以林龄8年的4种人工林为研究对象,未造林空地为对照,对各样地的土壤理化性质指标进行分析。结果表明:(1)4种人工林均能改善黄河三角洲滨海盐碱地的土壤理化特性。与对照空地相比,人工林的平均土壤容重、含盐量、pH值分别降低了4.8%,44.4%,2.5%,平均总孔隙度、毛管孔隙度分别提高了6.0%,4.7%;(2)不同人工林对土壤阳离子交换性能及碱化度的影响效果各异,其碱化度大小依次为:柽柳(27.4%)>杜梨(23.3%)>对照(19.5%)>白蜡(16.0%)>盐柳(13.3%)。
In order to explore the improvement effect of plantation on the physical and chemical properties of coastal saline-alkali soil in the Yellow River Delta, four kinds of plantations with 8-year stand were selected as the research objects and the unconfirmed open space was compared with the methods of field sampling and indoor analysis. The physical and chemical properties of the soil samples were analyzed. The results showed that: (1) All four kinds of plantations could improve the soil physical and chemical properties of coastal saline land in the Yellow River Delta. Compared with CK, the average soil bulk density, salinity and pH of the plantation decreased by 4.8%, 44.4% and 2.5%, respectively, and the average total porosity and capillary porosity increased by 6.0% and 4.7%, respectively The effects of different plantations on the cation exchange performance and the degree of alkalization were different, and the degree of alkalization was as follows: tamarisk (27.4%)> pears (23.3%)> control (19.5%)> white wax (16.0% )> Salix (13.3%).