植烟土壤酶活性对连作的响应及其与土壤理化特性的相关性研究
Journal of Anhui Agricultural Sciences(2012)
Abstract
[目的]研究植烟土壤酶活性对连作的响应及其与土壤理化特性的相关性,以期为烟叶基地土壤改良提供技术支撑.[方法]对我国主要烟叶产区(云南玉溪、贵州福泉、湖南浏阳)连作植烟土壤过氧化氢酶和脲酶2种酶活性特征进行了研究,并探讨2种酶活性与土壤理化指标的相关性.[结果]过氧化氢酶活性与有机质含量呈正相关,脲酶活性与全磷含量呈正相关,2种酶与交换性钾含量均呈负相关.[结论]长期连作使土壤酶活性降低.酶活性与土壤理化指标具有一定相关性.
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Key words
Growing tobacco soil,Correlation,Soil enzyme activity,Soil physical and chemical index,Monocropping
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