黄壤性水稻土氧化铁形态及剖面分异特征

发布时间：2019-04-09 12:53

【摘要】：为探讨不同类型黄壤性水稻土耕层氧化铁形态及剖面分异特征,在贵州省内分别对潴育型、淹育型、潜育型黄壤性水稻土共11个典型剖面进行调查与室内分析。结果表明:(1)3种水稻土剖面风化发育程度高低排序为淹育型潴育型潜育型;(2)不同类型水稻土耕层氧化铁形态各异,其中耕层游离铁含量排序为淹育型潴育型潜育型,耕层无定型铁含量排序为潴育型潜育型淹育型,络合铁含量排序为潴育型淹育型潜育型,而晶质铁含量排序为淹育型潜育型潴育型;(3)氧化铁在剖面中分异程度表现为游离铁、晶质态铁含量在一定范围内随剖面加深而增加,无定型铁、络合铁含量在一定范围内随剖面加深而减少。研究结果可为贵州省黄壤性水稻土发生分类和系统分类提供相应依据。
[Abstract]:In order to study the morphology and profile differentiation of iron oxide in cultivated layer of different types of yellow paddy soil, 11 typical profiles of paddy soil of yellow soil, including retention type, submerged type and latent type, were investigated and analyzed in laboratory in Guizhou Province. The results showed that: (1) the degree of weathering and development of the three paddy soil profiles was in the order of submerged type, retention type and latent type; (2) different types of paddy soil have different forms of iron oxide in plough layer, in which the free iron content in ploughing layer is in the order of submerged type, and the order of amorphous iron content in ploughing layer is that of retention type, and the order of free iron content in ploughing layer is that of submerged type. The content of complex iron was in the order of submerged type and crystalline iron content was submerged type, while the order of crystalline iron content was submerged type of potential type of retention, and the order of crystalline iron content was that of submerged type of potential type of retention. (3) the degree of differentiation of iron oxide in the profile shows free iron, the content of crystalline iron increases with the deepening of the profile, and the content of complex iron decreases with the deepening of the profile within a certain range. The results can provide the basis for the genetic classification and systematic classification of yellow loam paddy soil in Guizhou Province.
【作者单位】：贵州大学农学院;贵州大学新农村发展研究院;
【基金】：国家自然科学基金(编号:40761011) 贵州省科技创新人才团队建设计划(编号:黔科合人才团队[2013]4020)
【分类号】：S153.61

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