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用压力膜、吸力平板及饱和蒸气压法对山东省主要土壤类型的持水特性进行了研究。结果表明,土壤持水特性受土壤结构孔隙类型及土壤质地的影响。一般规律是在同一土类内质地重的土层的水分常效数值高于质地轻的层次,但火山灰土恰恰相反。土壤有效水含量、水分特征曲线及释水能力的综合分析表明,山东土壤中棕壤亚类、潮土、淋溶褐土及潮褐土的持水性能都较好,对水分有较强的自我协调能力;砂姜黑土最差,持水力及供水力都弱;粗骨土、红粘土及褐土亚类居中。
The water holding characteristics of the main soil types in Shandong Province were studied with pressure membrane, suction plate and saturated vapor pressure method. The results showed that the soil water retention characteristics were affected by the pore structure of soil structure and soil texture. The general rule is that the soil moisture content in soil of the same soil type is higher than that of light soil, but the volcanic ash soil is just the opposite. The comprehensive analysis of soil available water content, water characteristic curve and water releasing ability showed that the water-holding properties of the brown soil sub-category, the ocher soil, the leached-cinnamon soil and the cinnamon soil are better Self-coordination ability; Shajiang black soil is the worst, holding water and water supply are weak; coarse bone soil, red clay and brown soil in the middle class.