Arid Zone Research ›› 2021, Vol. 38 ›› Issue (6): 1741-1749.doi: 10.13866/j.azr.2021.06.26

• Soil Resources • Previous Articles     Next Articles

Effect of fertilization on the characteristics of soil microbial community in the rhizosphere of Cyperus esculentus in the sandy area of Xinjiang

XU Jieliang1(),ZHANG Fenghua1,2,LI Bianbian1,WANG Jiaping1,2,CHENG Zhibo1,2()   

  1. 1. College of Agriculture, Shihezi University, Shihezi 832000, Xinjiang, China
    2. Key Laboratory of Oasis Ecological Agriculture, Shihezi University, Shihezi 832000, Xinjiang, China
  • Received:2021-04-14 Revised:2021-08-30 Online:2021-11-15 Published:2021-11-29
  • Contact: Zhibo CHENG E-mail:1263334813@qq.com;czb2004@126.com

Abstract:

The effects of different fertilization treatments on the microbial community composition and diversity in the rhizosphere soil of Cyperus esculentus should be explored to improve the nutrient content and manage the soil fertility of the Xinjiang sandy area. In this study, C. esculentus in the sandy area of Xinjiang was used as the research object. Results showed that fertilization significantly increased the soil available potassium, available phosphorus, alkali-hydrolyzable-nitrogen, and soil organic matter content. Chao, Ace, and Shannon indices of bacteria and fungi in the rhizosphere soil of C. esculentus increased as fertilization rates decreased. The dominant bacterial communities in the rhizosphere soil were Actinomycota, Proteobacteria, Firmicutes, and Chloroflexus, and the dominant fungal communities were Ascomycota and Basidiomycota. Fertilization affected the physical and chemical properties of the soil and consequently altered the soil microbial community structure and diversity in the rhizosphere of C. esculentus. Soil microbiome diversity decreased as fertilization rates increased. Redundancy analysis indicated that the main factors influencing the soil bacterial community were soil pH and electrical conductivity, and those affecting the change in the fungal communities were soil organic matter and moisture content.

Key words: fertilization, sandy aera, Cyperus esculentus, rhizosphere soil, microbial community, Xinjiang