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Acta Prataculturae Sinica ›› 2024, Vol. 33 ›› Issue (3): 34-45.DOI: 10.11686/cyxb2023141

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The effect of microbial organic fertilizers application on vegetation-soil-microbe in desert steppe

Jun-yao LI1,2(), Xing-chi JIANG1,3, Jin-yu HU4, Dong-guang WEI5, Xue-yong ZHAO1, Shao-kun WANG1()   

  1. 1.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,College of Resources and Environment,Beijing 101408,China
    3.University of Chinese Academy of Sciences,College of Life Sciences,Beijing 101408,China
    4.State-owned Yulin City Hengshan District Two Stone Knock Forest Farm,Yulin 719109,China
    5.Bayannur City Forestry and Grassland Resources Protection Center,Bayannur 015015,China
  • Received:2023-04-28 Revised:2023-06-05 Online:2024-03-20 Published:2023-12-27
  • Contact: Shao-kun WANG

Abstract:

Microbial organic fertilizers (MOF) provide water retention, air permeability and fertility and are prepared from agriculture and animal husbandry waste through aerobic fermentation by high efficiency cellulose decomposer bacteria. An experimental 1 kg·m-2 application of MOF experiment in the Urat desert steppe showed that applying MOF quickly restored the vegetation-soil-microbial system in degraded desert steppe through promoting vegetation growth, improving soil physical and chemical properties, increasing quantities of microbes and other similar effects. In this experiment it vegetation cover was significantly increased by 33%, soil sticky clay content was significantly increased by 2%, soil total carbon content was significantly increased by 9%, soil total nitrogen content was significantly increased 0.9%; And 11 phyla of soil bacteria and 1 phyla of soil fungi had significant differences in occurrence. Analytically, 92% of the increase in vegetation cover was explained by the MOF application and soil moisture content; 84% of the increase in species richness was explained by the effects of MOF application, soil moisture content and soil electrical conductivity. Overall, these results provide evidence of efficacy, data support and technical support for the restoration of arid desert steppe through application of microbial organic fertilizers.

Key words: microbial organic fertilizers, desert steppe, vegetation characteristics, soil microbes