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Position: Home > Articles > Enzyme Activitiex in Fraction of Microaggregates in Brown Earths with Different Fertility Levels in Liaoning Province Journal of Shenyang Agricultural University 2000,31 (2) 185-189

不同肥力棕壤及其微团聚体中酶活性比较

作  者:
汪景宽;汤方栋;张继宏;苏君伟;王铁宇;陈恩凤
单  位:
瓦房店市政府;沈阳农业大学;辽宁省农牧厅
关键词:
土壤肥力;微团聚体;酶活性
摘  要:
对辽宁省主要地区不同肥力典型棕壤及其微团聚体中4种主要酶活性进行测定与统计分析,试验结果表明,高肥力棕壤脲酶、中性磷酸酶、蔗糖酶和多酚氧化酶活性分别为1073±404NH3-Nμg·g-1土、2232.7±633.1酚μg-1土·24h、13.09±5.83葡萄糖mp· g-1土,24h和625.2酚μg·g-1土0.5h,显著高于低肥力棕壤相应的酶活性。在各粒级微团聚体中,<10μm微团聚体的4种酶活性最高,50~250μm微团聚体中的酶活性最低,并且<10μm微团聚体中酶活性在高低不同肥力土壤之间差异最为显著。
译  名:
Enzyme Activitiex in Fraction of Microaggregates in Brown Earths with Different Fertility Levels in Liaoning Province
作  者:
WANG Jing-kuan, et al. (Shenyang Agricultural University, Shenyang 110161)
关键词:
fertility; microaggregate; enzyme activity
摘  要:
The results obtained from typical brown earth in Liaoning Province showed that the activities of urease, neutral phospatase, invertase and polyphenol oxidase were 1073 ± 404NH3 - Nμ·g -1, 2232.7 ± 633. 1 phenol μg·g-1 24h, 13.09± 5.83 glucose mg·g-1.24h and 625.2 phenol μg·g-1 0:5h in fertile soils, greatly higher than that of the corresponding infertile soils. In<10μm Ancroaggregate the activities of the 4 kinds of enzyme were highest, whereas the lowest activities were in the fraction of 50 - 150μm microaggregates. Significant difference of the tested 4 enzymes in <10μm microaggregates between fertile and infertile brown earths was also found.

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