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Growing-season soil microbial respiration response to long-term no tillage and spring ridge tillage

International Journal of Agricultural and Biological Engineering 2020年第4期13卷 143-150页

作者： Gang Wang Honglei Jia Jian Zhuang Stephan Glatzel John McLBennett Yingcan Zhu College of Biological and Agricultural Engineering Jilin UniversityChangchun 130022China Department of Geography and Regional Research University of ViennaAlthanstraβe 14Vienna 1090Austria Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China Centre for Sustainable Agricultural Systems University of Southern QueenslandToowoombaQueensland 4350Australia

No tillage(NT)and spring ridge tillage(SRT)are two common applications of conservation *** conservation tillage is known to exert major control over soil microbial respiration(SMR),the growing-season SMR response to these two applications remains *** order to better understand the influence of conservation tillage practices,this experiment was conducted in an experimental field using NT and SRT for 17 *** situ measurements of SMR,soil temperature and soil water content(SWC)were *** samples were collected to analyze soil porosity,soil microbial biomass(SMB)and soil enzymatic *** show that the two conservation tillage systems had a significant difference(p0.05).Despite SRT increasing the proportion of micro-porosities and meso-porosities,the soil macro-porosities for NT were 7.37%higher than that of SRT,which resulted in higher bacteria and fungi in *** to SRT damaged the hypha,which had disadvantage in soil microbe ***,less soil disturbance was a unique advantage in NT,which was in favor of improving soil macro-pores and *** analyses(RDA)showed SMR was positively correlated with soil macro-pores,SMB and ***,the Pearson correlation test indicated that SMB and soil enzymatic activities did not have a significant correlation(p>0.05).This study results suggest that SRT is more conducive to carbon sequestration compared with NT in cropland.

关键词： no tillage spring ridge tillage soil microbial respiration microbial biomass soil porosity soil enzymatic activity

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