紫色水稻土有机无机复合与土粒团聚的关系

紫色水稻土的原土复合量（重组腐殖质）为中性土〉钙质土〉酸性土，同一土壤剖面中其含量是随土层深度下降；而有机无机复合度为钙质土〉中性、酸性土，在土壤剖面中是随土层深度增加。〈０．０１ｍｍ土粒团聚量和〈０．０１ｍｍ土粒团聚度为钙质土〉中性土〉酸性土。原土复合量和有机质含量，物理性粘粒含量、铁氧化物含量与〈０．０１ｍｍ土粒团聚量呈显著正相关；而有机无机复合度与有机质含量呈显著负相关，与腐殖质结合状态，物

REIATIONSHIP BETWEEN ORGANO-MINERAL COMPLEXING AND SOIL PARTICLE AGGREGATION IN PADDY SOILS DEVELOPED FROM PURPLE SOILS

The content of soil complexing in paddy soils developed from purple soils appears in the sequence of neutral soils > calcareous soils > acid soils and decreases with depth of soil layer, while the degree of organo-mineral complexing is in the order of calcareous soils > neutral and acid soils and increases with the depth of soil layer. The content and degree of <0.01mm soil particle aggregation are in the sequence of calcareous soil > neutral soils > acid soils. The content of soil complexing is positively related with the contents of organic matter, physical clay, Fe oxide and <0.01mm soil particle aggregation. But the degree of organo-mineral complexing is negatively related to content of organic matter, but insigificantly related to the combined forms of humus, the content of physical clay and the degree of <0.01mm soil particle aggregation. The complexing humus with mineral (content of soil complexing) in soil organic matter plays an important role.in soil particle aggregation. The content of <0.01mm soil particle aggregation depends on the content of soil complexing to a great extent. The relationship between complexing of organo-mineral and aggregation of soil particle is reflected by the relationship between the content of soil complexing and the content of <0.01 mm soil particle aggregation.