| Diversity characteristics of rhizosphere soil and microbial community under different rotation patterns of baby cabbage |
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| DOI：10.7606/j.issn.1000-7601.2023.02.12 |
| Key Words: baby cabbage rotation mode rhizosphere soil microbial community diversity Ningxia |
| Author Name | Affiliation | | LIU Su | School of Agriculture, Ningxia University, Yinchuan 750000, China | | FENG Haiping | Institute of Horticulture, Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan, Ningxia 750000, China | | CHENG Yandi | School of Agriculture, Ningxia University, Yinchuan 750000, China | | CHEN Zhuo | School of Agriculture, Ningxia University, Yinchuan 750000, China | | KANG Jianhong | School of Agriculture, Ningxia University, Yinchuan 750000, China | | WU Hongliang | School of Agriculture, Ningxia University, Yinchuan 750000, China |
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| Abstract: |
| A localization experiment was carried out in the southern mountainous area of Ningxia to explore the effects of different crops and baby cabbage rotation on soil environment. The microbial diversity of five treatments of baby cabbage\|broccoli (CMB), baby cabbage\|green onion (CMG), baby cabbage\|onion (CMO), baby cabbage\|potato (CMP) and baby cabbage continuous cropping (CCC) were compared and analyzed by high\|throughput sequencing technology combined with soil physical and chemical properties and enzyme activity. The aim was to screen out suitable crops for baby cabbage rotation and provide theoretical basis for alleviating or avoiding continuous cropping obstacles of baby cabbage from the perspective of cultivation mode selection. The results showed that compared with continuous cropping, the highest content of nitrate nitrogen in potato soil was 12.8 mg·kg-1, and the highest content of available phosphorus in spring onion soil was 75.74 mg·kg-1. However, the content of available potassium and organic matter decreased under different rotation patterns. Alkaline phosphatase, sucrase in potato soil and catalase and urease in onion soil were significantly lower than those in baby cabbage continuous cropping and other crops. The results of bacterial abundance at the genus level showed that rotation led to the increase of the abundance of most beneficial bacteria, such as Cupriavidus, Sphingomonas, Caulobacter, etc., while the abundance of harmful bacteria and other unclassified functional bacteria such as Burkholderiaceae and Flavobacterium decreased. The results of fungal community composition indicated that Ascomycota was the common dominant flora under continuous cropping and rotation mode. At the same time, there was no fungus genus with the highest abundance in the soil of onion and potato rotation and there was a significant difference between the soil of baby vegetable and that of continuous cropping. Redundancy analysis showed that soil nitrate nitrogen was the most important factor for changing the community structure of bacteria and fungi under continuous cropping and different rotation patterns. To sum up, different crops and baby cabbage rotation caused changes in soil chemical properties, enzymatic properties, and microbial diversity. Of which onion and potato had the best performance in all indicators. It is suggested that baby cabbage\|onion and baby cabbage\|potato rotation should be popularized as the main rotation mode in the cold vegetable industry in the mountainous area of Southern Ningxia. |
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