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两种气候条件下梯度有机质含量农田黑土纤维素酶和β-葡糖苷酶活性研究

Cellulase and β-glucosidase activities in arable Mollisols with different organic matter contents under two climates

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【作者】 陈一民徐欣侯萌张锦源周珂焦晓光隋跃宇

【Author】 CHEN Yimin;XU Xin;HOU Meng;ZHANG Jinyuan;ZHOU Ke;JIAO Xiaoguang;SUI Yueyu;Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,CAS;College of Agricultural Resource and Environment,Heilongjiang University;

【通讯作者】 隋跃宇;

【机构】 中国科学院东北地理与农业生态研究所黑土区农业生态重点实验室黑龙江大学农业资源与环境学院

【摘要】 利用空间移位的方法将5种有机质含量的农田黑土置于中温带大陆性季风气候(MAT4. 5)和寒温带大陆性季风气候(MAT1. 5)条件下,探究了气候-有机质-施肥对土壤纤维素酶活性和β-葡糖苷酶活性的影响。结果表明:在MAT4. 5条件下农田黑土中纤维素酶活性要高于MAT1. 5;随有机质含量升高,纤维素酶活性在MAT4. 5条件下呈逐渐降低的趋势;施肥能明显提高纤维素酶活性,且在MAT4. 5条件下增加幅度较大,而在MAT1. 5条件下却呈现出"U"型变化趋势。MAT4. 5条件下β-葡糖苷酶活性略高于MAT1. 5条件下的活性,其活性均随着土壤有机质含量升高而增强;施肥能提高各有机质含量农田黑土中β-葡糖苷酶活性,在MAT1. 5条件下提升幅度较大。方差分析表明气候-有机质-施肥的主效应对土壤纤维素酶与β-葡糖苷酶活性均有显著影响,但是交互作用只对纤维素酶整体活性有显著影响。

【Abstract】 In this study, five Mollisols with different soil organic matter( SOM) contents were moved into two climate zones( MAT4. 5,warmer climate; and MAT1. 5,colder climate) by spatial transplanting. The effects of climate,SOM and fertilization on cellulase and β-glucosidase activities were investigated. The results showed that both warmer climate and fertilization could enhance cellulase activity; the activity decreased with the increasing SOM in the warmer climate but changed as "U"in the colder climate;while the β-glucosidase activity increased with the increasing SOM in two climate conditions and two fertilization treatments. Although fertilization could enhance β-glucosidase activity,the increasing rates were higher in the colder climate. Warmer climate also increased β-glucosidase activity,especially in the no fertilization treatment. The climate,soil organic matter contents and fertilization could significantly influence cellulase and β-glucosidase activities,however,the interactions among/between them could significantly affect the cellulase activity only.

【基金】 黑龙江省杰出青年科学基金(JC2018011);中国科学院战略性先导科技专项(XDA23060503);国家重点研发计划(2016YFD0800100)
  • 【文献出处】 土壤与作物 ,Soils and Crops , 编辑部邮箱 ,2019年03期
  • 【分类号】S153.6;S154.2
  • 【被引频次】5
  • 【下载频次】301
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