不同改良剂对矿区土壤中几种蔬菜重金属积累特性的影响_农业科学.doc

摘  要

　　　通过盆栽试验，研究了矿区污染土壤上施用有机肥、石灰2种改良剂对萝卜、莴苣、青菜、白菜的地上部重金属元素Cu、Cd、Pb、Zn积累的影响。结果表明：(1)施加改良剂对萝卜吸收Pb和Cd起到抑制作用，并且随着施用量的增加抑制能力增加，但对萝卜吸收Cu起到促进作用。(2)改良剂的施加，除了施加低量猪粪对莴苣吸收Zn起到促进作用以外，其它均起到抑制作用，其中改良剂中量对抑制莴苣根系吸收Cu、Zn、Pb和Cd的效果最为显著。(3)施加改良剂对青菜吸收Cu和Cd起到抑制作用，并且随着施用量的增加抑制能力增加，但对青菜吸收Pb起到促进作用。(4)施加改良剂对白菜吸收Zn和Pd起到抑制作用，并且随着施用量的增加抑制能力增加，但对白菜吸收Cu起到促进作用。

关键词：改良剂；蔬菜；重金属；积累特性

ABSTRACT

　　　The pot experiment was studied by mining area contaminated soil, organic fertilizer, lime on two improvers for turnip, lettuce, green vegetables, cabbage land heavy metal element of Cu and Pb, Zn Cd, accumulated effects. The results show that: (1) to exert improvers Pb and Cd play radish absorption inhibition, and with the increase surueyed inhibitory ability increases, but to promote Cu turnip absorption. (2) improver applied, in addition to exert a low dose of lettuce absorption pig Zn promote played outside, and others are inhibition, which improver in to restrain root absorb quantity of Cu, Zn lettuce Pb and Cd, the most significant effect. (3) to exert improvers Cu and Cd vegetables absorb inhibition, and along with has increased surueyed inhibitory ability increases, but to promote vegetables absorb the Pb. (4) to exert improvers Zn and Pd have cabbage absorption inhibition, and with the increase surueyed inhibitory ability increases, but to promote Cu cabbage absorption.

Key words: Amendments；Vegetable；Heavy metal；Accumulation characteristics