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不同水型红壤性水稻土及其起源土壤的表层腐殖质 H/F 值,由红壤→渗育型→潴育型→潜育型水稻土逐渐增大。晶胶率是区分不同水型红壤性水稻土的良好发生指标。渗育型水稻土剖面晶胶率自上而下逐渐增大;潴育型 W 层晶胶率较其它土层高;脱潜型 P 层晶胶率高于其它土层;潜育型 G 层晶胶率<1.0。红壤性水稻土磁化率大大低于起源土壤,不同水型水稻土具有不同的磁化率剖面.磁化率剖面也可作为水型的划分依据。母质对水稻土的粘粒硅铝率、粘粒铁富集系数、质地及耕层有机质含量都有明显的影响。红壤性水稻土分类中土属的划分必须对母质因素加以充分考虑。
The H / F values of surface humus from different types of red paddy soil and its origin soil increased from red soil → infiltration type → retention type → latent soil type. Crystallization rate is a good indicator to distinguish different paddy soils from paddy soil. The gelatinization rate of infiltration type paddy soil profile increased gradually from top to bottom. The retention rate of gelatinous W layer was higher than that of other soil layers. The gelation rate of de-latent P layer was higher than other soil layers. Crystallization rate <1.0. The susceptibility of paddy soils in the red soil is much lower than that in the soil of origin, and different types of paddy soils have different susceptibility profiles. The susceptibility profile can also be used as a basis for the division of water types. The parent material has a significant effect on clay clay Si-Al rate, clay-iron enrichment coefficient, texture and topsoil organic matter content of paddy soil. The division of soil genus in red soil paddy soil classification must take full account of the parent material factors.