土壤2017，Vol.49Issue(5)：992-1000,9.DOI:10.13758/j.cnki.tr.2017.05.021
黄河三角洲县域尺度的盐渍化土壤化学参数特征研究
On Chemical Parameters Characteristics of Salinity Soil on County Scale in Yellow River Delta
摘要
Abstract
Kenli County, located at Yellow River Delta, has abundant land resources but with low utilization rate due to the serious inhibition of stern soil salinization which leads to great spatial variation of soil physical and chemical properties. This paper studied systematically the path relationships between soil salt and chemical parameters and the spatial variation characteristics of salinity parameters of 0-20 cm and 20-40 cm soils in Kenli County by the methods of field soil sampling and laboratory chemical analysis. The results showed that salinity of 0-20 cm soil was higher than that of 20-40 cm soil. Except for pH, the variation coefficient of the other studied chemical parameters of the two layer soils were all above medium variant. Cl-, Na+ and Ca2+ had significant linear correlation with electrical conductivity (EC5:1), indicating they were the direct influential factors on soil salinity. 0-20 cm soil showed strong salinization and sodication along the costaline, both EC5:1 and SAR of 20-40 cm soil were less than topsoil, meaning less soil salinization and sodication. pH in 0-20 cm soil was higher than that of 20-40 cm soil, meaning higher alkalization. The above results can provide not only reliable data bases and empirical formula for soil salinity study but also scientific basis and theoretical guidance for soil salinization control in Kenli County.关键词
垦利县/土壤盐渍化学参数/经典统计分析/空间分异Key words
Kenli County/Soil saline chemical parameters/Classical statistics analysis/Spatial variation分类
农业科技引用本文复制引用
蒋名亮,陈小兵,单晶晶,郭建青,孙运朋,赵凌云,徐力刚..黄河三角洲县域尺度的盐渍化土壤化学参数特征研究[J].土壤,2017,49(5):992-1000,9.基金项目
国家重点研发计划课题(2016YFD02003003)、东营市重点研发计划项目(2016YF17)、山东省重点研发计划项目(2017 CXGC0316)和江苏省科技计划项目(BZ2014005,BE2014739)资助. （2016YFD02003003）
