桂西北环境移民示范区柑桔园土壤中量微量元素含量研究  

Contents of Soil Second and Trace Element From Citrus Orchards in Demonstration Area of Environmental Immigrants of Northwest Guangxi

作　　者：余红兵[1] 肖润林[2] 王仁才[3] 赵运林[1] 杨知建[3] 

机构地区：[1]湖南城市学院,湖南益阳413000 [2]中国科学院亚热带农业生态研究所,湖南长沙410125 [3]湖南农业大学,湖南长沙410128

出　　处：《农业现代化研究》2007年第4期504-506,共3页Research of Agricultural Modernization

基　　金：国家十五科技攻关项目"喀斯特(岩溶)峰丛洼地生态重建技术与示范(2001BA606A-8);"中国科学院重点项目"区域农业安全高效生产技术研究与示范"(NK十五-D-15)

摘　　要：对桂西北环境移民示范区柑桔园126个表层土样的有机质、pH、土壤全锌、锰、铜、铁、钙、镁及土壤有效态锌、铜、铁、代换态钙、镁等指标进行了测定。研究探明了示范区柑桔园土壤中量、微量元素含量状况,结果表明该柑桔园全量铜、锌和锰含量低,全钙、镁缺乏严重,但全铁含量高;中量元素代换性Ca、Mg也严重缺乏,有效铜含量极缺,有效锌含量缺乏,而有效Fe含量高量或过量。柑桔园土壤pH值范围为3.75～4.65,有效铁含量与pH呈极显著负相关,而代换性镁、代换态钙、有效铜、有效锌含量与pH值没有相关性。同时,土壤有机质与土壤有效锌、有效铜、镁含量呈显著或极显著正相关,提高土壤有机质水平对改善土壤养分状况具有积极作用。Research was made on some indices of soil in Northwest Guangxi.The soil indexes include soil organic matter,total Zn,Mn,Cu,Fe,Ca,Mg,available Zn,Cu,Fe,and exchangeable Ca,Mg,pH etc.Soil samples include 126 topsoils,which were corrected in the citrus demonstration area of environmentat immigrants.The status of second and trace etement contents in the soil of citrus orchard were studied.The result showed that total Zn,Mn,Cu content was low,and total Ca,Mg content was seriously deficient,and however total Fe content was superfluous. Exchangeable meso Ca,Mg were seriously deficient,available Cu content was seriously deficient,available Zn content was deficient,however available Fe content was all higher.When soil pH was 3.75～4.65,very significant negative was found between the contents of available Fe and pH values in soil,however there no correlation between the contents of available Zn,Cu,Ca,Mg and pH values in soil.There were a very significant positive correlation between the contents of available Zn,Cu,Mg and soil organic matter of citrus orchard,which indicated that improving soil organic matter help to soil nutrients status.

关 键 词：环境移民示范区 柑桔园 土壤分析 

分 类 号：S143.7[农业科学—肥料学]