黑土酶活性的剖面分布及其对养分的评价  

Distribution Characteristics of Soil Enzymatic Activities in Black Profiles and Their Evaluation to Soil Nutrients

作　　者：岳中辉[1,2] 张兴义[2] 隋跃宇[2] 陈渊[2] 陈红艳[1] 罗秋滨[3] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,哈尔滨150025 [2]中国科学院东北地理与农业生态研究所,哈尔滨150081 [3]哈尔滨学院工学院,哈尔滨150080

出　　处：《水土保持学报》2011年第4期154-159,164,共7页Journal of Soil and Water Conservation

基　　金：国家科技支撑项目(2009BADB3B04);国家自然科学基金项目(30970552);哈尔滨师范大学青年学术骨干资助计划(KGB200808)

摘　　要：在黑龙江省内选取9个典型黑土剖面,研究其土壤过氧化氢酶、磷酸酶、脲酶、转化酶、硝酸还原酶活性的剖面分布规律。结果表明:在0-40 cm土层中,黑土5种酶活性都随土壤层次的加深而下降,而在40cm以下的土层中,过氧化氢酶、硝酸还原酶、转化酶活性不再降低,趋于稳定或略有升高,磷酸酶和脲酶活性却急剧降低,甚至没有酶活性;相关分析表明,土壤过氧化氢酶、磷酸酶、脲酶、硝酸还原酶活性和土壤全氮、速效氮、全磷、全钾、全碳含量及C/N显著相关,土壤转化酶活性和土壤全氮、速效氮、全钾、速效钾、全碳含量显著相关,主成分分析结果显示在第一主成分中,土壤磷酸酶、脲酶活性占有较大比例,可以用来作为土壤氮素、全量磷分和全量碳分的指示指标。Distribution characteristics of catalase,phosphatase,urease,invertase and nitrate reductase activities in nine soil profiles at black belt in Heilongjiang province were studied.The results showed that five enzymatic activities reduced in turn from 0 cm to 40 cm layer but catalase,invertase,nitrate reductase activities got to stabilization or increased a little,while phosphatase,urease activities reduced sharply even to zero below 40 cm layer.Correlation analysis showed that there were notably correlation between four soil enzymatic activities（catalase,phosphatase,urease,nitrate reductases） and six soil nutrients（total N,available N,total P,total K,total C and C/N）,as well as between invertase activity and total N,available N,total K,available K,total C.Further analysis of principal component indicated that phosphatase,urease activities had high proportion in 1st principal component.So they could be used as indicators of soil total N,total P and total C.

关 键 词：黑土 剖面 土壤酶活性 土壤养分 

分 类 号：S154.2[农业科学—土壤学]