不同施肥种类对土壤及脐橙中的重金属含量的影响  

Effects of different tpyes of fertilizers on heavy metal contents in the soil and navel orange fruits

作　　者：徐庆贤[1] 官雪芳[1] 林碧芬[2] 林斌[1] 

机构地区：[1]福建省农业科学院农业工程技术研究所,福建福州350003 [2]福建省农业科学院畜牧兽医研究所,福建福州350003

出　　处：《浙江农业学报》2011年第5期977-982,共6页Acta Agriculturae Zhejiangensis

基　　金：福建省科技计划重点项目(2007I0038);福建省发改委农业"五新"基金项目(2010452);福建省农业科学院创新团队基金项目(STIFY05)

摘　　要：为明确施用不同种类肥料后土壤及脐橙中的重金属含量的变化,特对种植年份为1997年和2002年的施用有机肥、化肥、沼肥后土壤及脐橙中的重金属Cr,Cu,Pb,Zn,As,Cd进行检测及相关性分析。结果表明:施用肥料后,有机肥区2002年的As,1997年的Cu和Pb,沼肥区2002年的Pb的含量高于对照;脐橙果实中只有重金属As和Cu存在显著差异(P<0.05),其中As的含量为有机肥区>化肥区>沼肥区,Cu含量为化肥区>有机肥=沼肥区;种植年份为1997年和2002年的土壤及脐橙中重金属的含量无显著差异;各施肥区土壤及脐橙中的重金属的含量均未超标。相关性分析显示,土壤—脐橙中Cu和Zn的含量在一定浓度范围内呈正相关,R2>0.9;As,Cr,Pb,Cd的含量未呈现规律性变化,R2<0.7。In order to study the changes of content of heavy metals in the soil and navel orange fruits after application of different types of fertilizers, the contents of Cr, Cu, Pb, Zn, Cd and As were measured and the correlation analysis was carried out after the application of organic manure, chemical fertilizer and biogas waste fertilizer in 1997 and 2002. The results showed that the As content in 2002, and the Cu and Pb contents in 1997 were increased significantly by application of organic manure in the soil. Similarly, the Pb content in 2002 were significantly increased by application of biogas waste fertilizer. Only the heavy elements of As and Cu showed significant difference （ P 〈 0. 05 ） in the navel orange fruits as compared to the control. The order of the As accumulation was organic manure 〉 chemical fermical 〉 biogas waste fertilizer, and the Cu accumulation order was chemical fermical 〉 organic manure = biogas waste fertilizer. There was no significant difference of heavy metal contents of the soll and navel orange fruits in 1997 and 2002. All heavy elements did not exceed the limitation of related standard in the soil and navel orange fruits. The correlation analysis showed that there were significant positive correlation between Cu and Zn in the soil and navel orange fruits （R^2 〉 0. 9） , whereas there was no significant relathionship among As, Cr, Pb, Cd （R^2 〈 0. 7 ）.

关 键 词：重金属 土壤 脐橙 相关性 

分 类 号：S666[农业科学—果树学]