良好发育的红壤,常有一种特殊的稳固结构,它与氧化铁、铝的胶结有关。这种结构经泡水后基本稳定;还原处理或络合处理能致使较多的破坏;还原与络合联合处理能达到最大程度的破坏。从试验中还说明红壤结构的破坏率都与铁、铝溶出量成正相关。铁、铝积聚是红壤化作用的基本特征,与铁、铝直接有关的结构状况,从理论上说,应可作为分类上的参考指标。又因结构状况还受到矿物类型、粘粒含量、酸度等因素的影响,所以还具综合性的意义。同时按田间观察,它在生产上的意义也较大。工作中看到红壤的结构状况,至少可对红壤的发育度、熟化度以及母质因素的影响等做出有规律的反映,这也表明了它在分类上的现实意义。 Well-developed red soils often have a special, stable structure that is associated with the cementation of iron oxide and aluminum. This structure is basically stable after the bubbling water; reduction treatment or complexation treatment can cause more damage; reduction and complexation joint treatment can achieve the greatest degree of damage. From the experiment also shows that the destruction rate of red soil structure and iron, aluminum dissolution is positively correlated. The accumulation of iron and aluminum is a basic feature of reddening. The structural status directly related to iron and aluminum should theoretically be regarded as a reference index for classification. Because of structural conditions are also affected by the type of mineral, clay content, acidity and other factors, it also has a comprehensive significance. At the same time by field observation, it is also of greater significance in the production. At work, we can see that the structural state of red soils can at least reflect the development of red soils, the degree of ripening and the influence of parent materials, which also shows its practical significance in taxonomy.