长期施肥土壤的FDA水解酶活性

被引：20

作者：

马星竹 ^{[1
,2
]}

机构：

[1] 中国科学院沈阳应用生态研究所

[2] 黑龙江省农业科学院土壤肥料与环境资源研究所

来源：

浙江大学学报(农业与生命科学版) | 2010年 / 36卷 / 04期

关键词：

长期施肥; 荧光素二乙酸酯(FDA); FDA水解酶; 微生物量碳;

D O I：

暂无

中图分类号：

S154.4 [土壤-植物系统];

学科分类号：

071012 ; 0713 ;

摘要：

以长期不同施肥处理土壤为研究对象,运用荧光素二乙酸酯(FDA)为底物,采用分光光度法测定土壤FDA水解酶活性.结果表明:在黑土和棕壤上有机肥配施化肥处理的FDA水解酶活性增幅较大,相对于不施肥处理分别增加68.8%和72.4%,也显著高于单施化肥处理;土壤FDA水解酶活性与土壤微生物量碳具有极显著的正相关关系,在黑土和棕壤中相关系数分别为0.912**和0.871**;FDA水解酶活性能较好地反映微生物活性,可以作为评价土壤微生物量和活性的重要指标;同时,土壤FDA水解酶与参与C、N、P、S等重要养分循环的酶活性关系密切,均达到极显著水平.

引用

页码：451 / 455

页数：5

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