| Effects of bio\|organic fertilizer on soil bacterial community structure in walnut orchard |
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| DOI：10.7606/j.issn.1000-7601.2019.06.26 |
| Key Words: Bio\|organic fertilizer bacterial community high\|throughput sequencing walnut orchard soil |
| Author Name | Affiliation | | ZHANG Kaiyu | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shannxi 712100,China | | GU Jie | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shannxi 712100,China | | WANG Xiaojuan | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shannxi 712100,China | | GAO Hua | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shannxi 712100,China |
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| Abstract: |
| A field experiment was conducted to investigate the effect of bio\|organic fertilizer on the bacterial community diversity in walnut orchard. High\|throughput sequencing was used to study the bacteria diversity and composition in different fertilization treatments. An analysis of the relationship between bacterial community and environmental factors was conducted as well. There were three treatments including control (CK), conventional fertilizer treatment (TN) and bio\|organic fertilizer (TB). The results indiated that soil organic matter, total nitrogenandtotal phosphorus of TB were 46.3%, 30.6% and 50.8% higher than those of CK, respectively. The α-diversity index of TB was higher than that of TN and CK. While the ACE index and Shannon index of TN were 0.5% and 1.2% lower than that of CK treatment, respectively. At the phylum level, Proteobacteria, Acidobacteria, Actinobacteria, Bacteroidetes and Gemmatimonadete were the predominant phyla, accounting for 85.2%~90.6% of the total reads. At the genera level, Sphingomonas and Arthrobacter were predominant genus. The relative abundance of Sphingomonas and Arthrobacter in TB were increased by 17.6% and 56.6% than that in CK, and 51.5% and 104.3% than that in TN, respectively.Redundancy analysis showed that environmental factors explained 94.6% of bacterial community changes. Soil organic matter,alkali\|hydrolyzable nitrogen and potassium contents were the main factors for the bacterial community changes in walnut garden. |
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