| Effects of different cropping years on soil chemical properties of special medicine source plant |
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| DOI：10.7606/j.issn.1000-7601.2023.01.18 |
| Key Words: rhizosphere microorganism continuous cropping Illumina sequencing soil microbial community |
| Author Name | Affiliation | | ZHANG Yingying | Gansu Academy of Agri\|Engineering Technology, Wuwei, Gansu 733006, China
Key Laboratory of the Special Medicine Source Plant for Germplasm Innovation and Safety Utilization in Gansu Province, Wuwei, Gansu 733006, China；Wuwei Technology Innovation Center of Genuine Medicinal Materials Ecological Cultivation in Qilian Mountain Area, Wuwei, Gansu 733006, China | | WEI Yujie | Gansu Academy of Agri\|Engineering Technology, Wuwei, Gansu 733006, China
Key Laboratory of the Special Medicine Source Plant for Germplasm Innovation and Safety Utilization in Gansu Province, Wuwei, Gansu 733006, China；Wuwei Technology Innovation Center of Genuine Medicinal Materials Ecological Cultivation in Qilian Mountain Area, Wuwei, Gansu 733006, China | | WU Zhitao | Gansu Academy of Agri\|Engineering Technology, Wuwei, Gansu 733006, China
Key Laboratory of the Special Medicine Source Plant for Germplasm Innovation and Safety Utilization in Gansu Province, Wuwei, Gansu 733006, China；Wuwei Technology Innovation Center of Genuine Medicinal Materials Ecological Cultivation in Qilian Mountain Area, Wuwei, Gansu 733006, China | | YANG Xianzhong | Gansu Academy of Agri\|Engineering Technology, Wuwei, Gansu 733006, China
Key Laboratory of the Special Medicine Source Plant for Germplasm Innovation and Safety Utilization in Gansu Province, Wuwei, Gansu 733006, China；Wuwei Technology Innovation Center of Genuine Medicinal Materials Ecological Cultivation in Qilian Mountain Area, Wuwei, Gansu 733006, China |
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| Abstract: |
| Illumina high throughput sequencing technology and conventional analysis method was employed to investigate soil bacterial and fungal communities, soil chemical properties in special medicine source plant with different cropping histories of 0, 1, 4, and 24 years. The results indicated that the electrical conductivity and nitrate nitrogen in the 24 years were significantly higher than those in other years. Soil fungi diversity analysis showed that the index of ACE and Chao1 in the 24 years soils were higher than those in 1 year and the richness and diversity of soil fungi increased. But it had no significant effects on soil bacterial α-diversity index, the richness and diversity of soil bacteria decreased. The predominant phyla of soil bacterial were Proteobacteria, Acidobacteria and Actinobacteria in all soil samples. Sphingomonas and Xanthomonaceae showed an obvious upward trend with the increase of planting years, while RB41 and Lysobacter showed a downward trend. The predominant phyla in soil fungal were Mortierellomycota, Ascomycota and Basidiomycota in all soil samples. The relative abundance of Mortierella increased first and then decreased. Fusarium，Cladosporium and Aspergillus decreased first and then increased with the planting years. The relative abundance of Fusarium for 24 years was higher than that for 1 and 4 years. The increase of Fusarium relative abundance was an important reason for the obstacle of continuous cropping. Redundancy analysis suggested that fungal Basidiomycota, Ascomycota, Chytridiomycota and Mucoromycota were evidently interrelated to electrical conductivity and soil nitrate nitrogen in the soils respectively. The changes of soil pH, nitrate nitrogen and electrical conductivity were important factors affecting the changes of soil microbial community under continuous cropping of special medicines source plant. |
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