摘要
采用相关分析和主成分分析方法对黄河三角洲棉田试验区土壤盐分特征进行研究,结果表明,试验区土壤为中度盐渍化,且盐分呈现一定的表聚现象;土壤各层盐基离子中,阳离子以Na+为主,阴离子以Cl-为主,这两种离子对棉花生长的毒害作用尤为突出;土壤盐分含量与Na+、SO42-、Cl-、Mg2+、Ca2+、NO32-、HCO32-离子含量均呈极显著正相关;Na+、Cl-及SO42-是影响试验区棉田盐渍化的主要特征因子。本研究结果可为黄河三角洲地区盐渍化土地科学管理和农业可持续发展提供理论基础和实践依据。
Using the correlation analysis and principal component analysis methods,the characteristics of soil salini-ty in the cotton experimental field of Yellow River Delta was carried out research .The results showed that：The soil of the experimental region was the moderate salinization,and salt appeared a certain surface aggregation phenomenon .The salt base ions in each soil layer,the Na＋was the dominant cation and the Cl-was the dominant anion .These two ions toxic for cotton growth were particularly prominent role .The soil salt content presented the significant positive correlation with the content of Na＋,SO42-,Cl-,Mg2＋,Ca2＋,NO32-and HCO32-.The Na＋,Cl-,and SO42-were the major characteristic factors affected the soil salinization of the experimental cotton field .This research results cran be provided the theoretical basis and practical basis for the scientific management of the saline land and sustainable agricultural devel-opment in the Yellow River Delta .
出处
《干旱地区农业研究》
CSCD
北大核心
2014年第5期149-153,共5页
Agricultural Research in the Arid Areas
基金
海洋公益性行业科研专项(201105020)
公益性行业(农业)科研专项经费项目(200903001)
国家科技支撑计划项目(2009BADA3B04)
中国科学院烟台海岸带所前沿项目"黄河三角洲陆海界面过程
生态演变与修复技术"
关键词
黄河三角洲
棉田
土壤盐渍化
主成分分析
盐分特征
Yellow River Delta
cotton field
soil salinization
principle component analysis
characteristics of soil salinity
