| 黄泛平原不同质地土壤的持水特性 |
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| 引用本文： | 张景略,苗付山.黄泛平原不同质地土壤的持水特性[J].土壤学报,1985,22(4):350-356. |
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| 作者姓名： | 张景略 苗付山 |
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| 作者单位： | 河南农学院;河南农学院 |
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| 摘 要： | 用压力膜法对黄泛平原不同质地潮土的持水特性进行了研究.结果指出,土壤的持水性、孔径分布和水容量都与土壤质地有密切关系.在高吸力情况下,土壤的持水性随土壤质地变粘而增强.土壤孔径分布与土壤质地的关系是:重力水孔隙随土壤质地变粘而减小;迟效水孔隙和无效水孔隙随质地变粘而增加;而易效水孔隙偏粘的土壤有减小的趋势.土壤水容量也受土壤质地的影响,重力水水容量随质地变粘而增加,易效水水容量是壤土高于砂性土和粘性大,而迟效水水容量则是轻粘土高于其它质地的土壤.
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THE CHARACTERISTICS OF MOISTURE RETENTION OF SOILS WITH DIFFERENT TEXTURES IN THE FLOOD PLAIN OF THE HUANGHE RIVER |
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| Zhang Jingluo and Miao Fushan.THE CHARACTERISTICS OF MOISTURE RETENTION OF SOILS WITH DIFFERENT TEXTURES IN THE FLOOD PLAIN OF THE HUANGHE RIVER[J].Acta Pedologica Sinica,1985,22(4):350-356. |
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| Authors: | Zhang Jingluo and Miao Fushan |
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| Institution: | Henan Agricultural College;Henan Agricultural College |
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| Abstract: | The characteristics of moisture retention of fluvo-aquic soils with different textures in the flood plain of the Huanghe River were studied by pressure menbmane method.Results showed that the modsture retention, distribution of pore space and specific water capacity of the soil were generally closely reated to soil texture. The moisture retention was increasing with the soil texture getting clayey. As to the relationship between the pore space distribution and soil texture, it was found that the gravitationa water pore space was decreasing with soil texture getting clayey;and the slowly availalble water pore spare cad nnavailable water pore space were increasing with soil texture getting clayey;however, available water pore space in clayey soils tended to be de creasing with soil texture getting clayey. The specific water capacity of gravitiona water was increasing with soil texture gettinn clayey;and the specific water capicity of regidly available water of loamy soil was higher than that of the soils with sandy and clayey textures;while the specific water of slowly available water of light-clayey soil wus higher than that of the soils with orther textures. |
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