吕保玉;白海强;何东明;

• 1:广西壮族自治区环境监测中心站

摘要(Abstract)：

[目的]为了研究在2种不同镉浓度的农田上蕹菜Cd-PSC和non-Cd-PSC 2个品种根际土壤酶和微生物的特征。[方法]采用自制根箱试验。[结果]蕹菜根际土壤5种酶(脲酶、转化酶、酸碱磷酸酶、蛋白酶)活性和三类微生物(细菌、真菌、放线菌)数量都显著大于非根际土壤(P<0.01)。在同一土壤上,蕹菜品种间酶活性和微生物数量均存在基因型差异(P<0.05);在2种土壤上,脲酶、转化酶、蛋白酶在2个品种间表现不一致,而酸碱磷酸酶则一直表现为Cd-PSC的根际酶活性小于non-Cd-PSC的活性。[结论]Cd-PSC的根系细菌、放线菌的数量显著小于non-Cd-PSC的根系土壤中的数量(P<0.01),而真菌数量显著大于non-Cd-PSC的数量(P<0.05)。

关键词(KeyWords)： 蕹菜;Cd-PSC;根际;土壤酶;土壤微生物

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 吕保玉;白海强;何东明;

Email:

DOI: 10.13989/j.cnki.0517-6611.2014.07.045

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