Soil microbiome biomass, activity, composition and CO2 emissions in a long‐term organic and conventional farming systems
Soil microbiome biomass, activity, composition and CO2 emissions in a long‐term organic and conventional farming systems
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长期有机和传统农业系统中的土壤微生物组生物量、活性、成分和二氧化碳排放
DOI：
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发表时间：
2022
影响因子：
3.8
通讯作者：
M. Ceccherini
中科院分区：
文献类型：
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作者：
Margherita Santoni;L. Verdi;Shamina Imran Pathan;Marco Napoli;A. dalla Marta;Francesca Romana Dani;G. Pacini;M. Ceccherini
环境友好型农业政策的实施增加了比较传统（CON）和有机耕作（ORG）系统的农业方面的必要性。本工作的目的是比较有机和传统的长期实验对细菌和真菌的生物量和活性，以及土壤CO2排放和速效氮形态与向日葵栽培的土壤的影响。土壤微生物生物量在有机质和土壤CO2排放中更为活跃和丰富。尽管数量较少，但在ORG和CON实验中，真菌比细菌更活跃。16 S rRNA基因测序结果表明，ORG处理有一个显着更大的细菌丰富度比CON。蓝藻，放线菌和变形菌是最丰富的门比其他两个系统之间的差异贡献更多。此外，土壤NH 4+和NO2-含量没有显着差异ORG和CON，而NO3-是在ORG。ORG向日葵产量显着低于CON相比。虽然还有很多有待发现的影响，这些农业实践对土壤化学性质和微生物多样性，我们的研究结果可能有助于这种类型的调查。
The implementation of environmentally friendly agricultural policies has increased the need to compare agricultural aspects of conventional (CON) and organic farming (ORG) systems. The objective of the present work was to compare the effects of an organic and conventional long‐term experiment on bacterial and fungal biomass and activity, as well as soil CO2 emission and readily available nitrogen forms in a soil cultivated with Helianthus annuus L. The microbial biomass was more active and abundant in ORG as well as soil CO2 emission. Despite being less abundant, fungi were more active than bacteria in both ORG and CON experiments. 16S rRNA gene sequencing showed that the ORG treatment had a significantly greater bacterial richness than CON. Cyanobacteria, Actinobacteria and Proteobacteria were the most abundant phyla contributing more than others to the differences between the two systems. Moreover, the soil NH4+ and NO2− content was not significantly different between ORG and CON, while NO3− was less in ORG. ORG sunflower yield was significantly less compared with CON. While much remains to be discovered about the effects of these agricultural practices on soil chemical properties and microbial diversity, our findings may contribute to this type of investigation.