三峡库区重庆段几种土壤元素全量与其有效态含量的相关关系分析

利用重庆市沿江经济带地球化学调查所得土壤分析数据,研究了三峡库区重庆段土壤中元素的丰缺状况及其全量与有效态含量的相关关系。在进行相关关系分析时,主要考虑了不同土壤类型和土壤的pH值两个因素。结果表明,研究区B、Cu、Mn、Zn、K、Fe元素全量现状水平充足;N、P、Mo元素全量现状水平缺乏;有效态B、Mo、P、Zn含量缺乏;有效态Cu含量丰富;有效态Mn、N、Fe和速效K含量充足。元素有效态含量易受土壤类型和土壤的pH值影响,在很大程度上受土壤类型影响较大。在研究区的四类土壤类型中N、Mn元素全量与其有效态含量相关关系较好;P元素在石灰土和水稻土中其全量和有效态含量相关关系显著。

Correlations Analysis between Available Main Elements and Total Elements in Three-gorges Reservoir Area

The relativity between available main elements and total elements in soils of Chongqing Economic Zone were analyzed.The abundance of main elements in study area were also analyzed.The results show that the total elements of B,Cu,Mn,Zn,K,Fe are sufficient in study area;the total elements of N,P,Mo are deficient;available B,Mo,P,Zn are deficient;available Cu,Mn,N,Fe,K are sufficient.The content of available elements is mainly affected by soil types and soil pH.The statistical relationship between available and total elements of N,Mn in four types soil studied are well correlative,and there are evident correlations between available P and total P in lime soil and paddy soil.