吉林省中部土壤元素含量与pH相关性分析

目的]研究土壤酸性增强对农作物生长条件的影响。方法]利用GPS野外定点采取吉林省中部表层土壤样品共90个,采用X荧光光谱法测定土壤元素含量,运用统计学方法进行土壤元素含量与pH相关性分析。结果]研究区表层土壤中K、Ca、Mg等必需大量元素含量与土壤pH呈0.01水平显著正相关关系,表明K、Ca和Mg含量随土壤酸性增强而流失;N元素含量与土壤pH呈0.01水平显著负相关关系,表明N含量随土壤酸性的增强而积累;Cr、Pb、Hg和As有害元素含量与土壤pH呈0.01水平显著负相关关系,表明Cr、Pb、Hg和As有害元素含量随土壤酸性增强而积累。结论]合理施肥,采用科学的耕作方式,可保护和改善土壤环境质量。

Correlation Analysis between Contents of Soil Elements and pH in the Middle of Jilin Province

Objective] The research aimed to study the effects of the soil acidity on the crop growth conditions.Method] GPS was used to collect 90 field points of the surface soil samples in the middle of Jilin Province.And X fluorescence spectrometric method was used to determine the contents of the soil elements.The statistical methods were used to analyze the correlation between the contents of soil elements and pH.Result] There was a highly significant positive correlation between K,Ca,Mg and pH in the surface soil of the study area,which showed that the content of K,Ca and Mg would lose with the increase of soil acidity.The contents were lower than the average of Jilin Province.It had a significant negative correlation between N content and pH,which showed that N content would accumulate with the reduction of pH.It had a highly significant negative correlation between Cr,Pb,Hg and pH,which showed that the content of Cr,Pb,Hg and As would accumulate with the increase of soil acidity.Conclusion] Reasonable fertilization and the scientific farming methods should be adopted to protect and improve the environmental quality of the soil.