苹果幼树铜、镉分布特征与累积规律研究

园艺学报 ›› 2006, Vol. 33 ›› Issue (1): 111-114.

苹果幼树铜、镉分布特征与累积规律研究

张连忠;路克国;杨洪强

(山东农业大学园艺学院, 泰安271018)

收稿日期:2005-01-28 修回日期:2005-08-30 出版日期:2006-02-25 发布日期:2006-02-25

The Distribution and Accumulation of Cuprum and Cadmium in Young Apple Tree

Zhang Lianzhong; Lu Keguo;Yang Hongqiang

(College of Horticulture, Shandong Agricultural University, Tai'an 271018, China)

Received:2005-01-28 Revised:2005-08-30 Online:2006-02-25 Published:2006-02-25

摘要/Abstract

摘要： 以3年生盆栽苹果(红富士/平邑甜茶) 为试材, 土壤施入重金属铜(Cu) 和镉(Cd) 后,于生长季不同时期检测根、枝、叶内铜、镉的含量变化。结果表明, 苹果根系、新梢和叶片中Cu和Cd累积量都随着土壤Cu和Cd施入量的增加而增大。从春梢展叶开始, 根系和新梢Cu、Cd含量逐渐增加, 到春梢停长时达到最高, 之后下降; 叶片Cu、Cd含量变化比根系和新梢滞后, 到秋梢生长期才达到最高。Cu、Cd在不同器官的累积量由高到低为: 根系>枝干>新梢>叶片; 苹果根系吸收和积累Cu的能力大于Cd, 但Cd向地上部的迁移能力大于Cu。

关键词: 苹果树, 铜, 镉, 重金属, 累积

Abstract: The experimentwas carried out using pot-cultured three-year-old Fuji apple tree (Malus pumila /Malus hupehensis Rehd. ) after cuprum (Cu) and cadmium (Cd) app lied to soil. The content of Cu and Cd in roots, shoots and leaves was measured during the growing season. The results shows that the accumulation of Cu and Cd in roots, shoots and leaves all increases with the increase of the content of Cu and Cd in soil. The content of Cu and Cd in roots and shoots rises step by step from the period of leaf expanding to the period of new shoot growth and gets the peak at the period of new shoot stopp ing growth in spring. The change of content of Cu and Cd in leaves lag behind that in roots and shoots. The content of Cu and Cd in leaves get the peak at the period of shoot growth again in autumn. The order of Cu and Cd content from high to low in different parts of app le is root > trunk > shoot > leaf. Root can absorb more Cu. There are more Cu is accumulated in roots and more Cd is transferred to top.

Key words: App le, Cup rum, Cadmium, Heavy metal, Accumulation

张连忠;路克国;杨洪强. 苹果幼树铜、镉分布特征与累积规律研究[J]. 园艺学报, 2006, 33(1): 111-114.

Zhang Lianzhong;Lu Keguo;Yang Hongqiang. The Distribution and Accumulation of Cuprum and Cadmium in Young Apple Tree[J]. ACTA HORTICULTURAE SINICA, 2006, 33(1): 111-114.

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