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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (27): 45-51.doi: 10.11924/j.issn.1000-6850.casb2022-0603

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Effects on Maize Stalk Fermentation: Straw Degrading Bacteria

YANG Taoyang1(), SA Rula1,2(), YE Ruhan3, YANG Hengshan1, HAN Feng1, WU Qingyun1   

  1. 1 Inner Mongolia Minzu University, Tongliao, Inner Mongolia 028000
    2 State Key Laboratory of eco-agriculture of Horqin Sandy Land, Tongliao, Inner Mongolia 028000
    3 Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, Inner Mongolia 010018
  • Received:2022-07-21 Revised:2022-10-27 Online:2023-09-25 Published:2023-09-22

Abstract:

In order to clarify the effect of straw-degrading strains on straw fermentation, the straw degradation strains screened from straw compost (a), compost (b), straw returning soil (c), sheep manure (d), and the main straw decomposing agent (E) in the production were used as the test materials, and compared with the sterilized distilled water (CK1), the corn straw was inoculated at 20℃ for fermentation. The physicochemical properties, straw maturity and microbial quantity of 45, 52, 59 days fermentation were determined, and the fermentation broth with good degradation effect was selected. The fermentation broth was diluted with soil extract, and the corn was cultured in the culture broth. The agronomic characters and physiological indexes of the seedlings were determined to study the process of straw fermentation. During the observation period of fermentation, the activity of filter paper enzyme and cellulase in treatment B was more stable, the content of nitrogen was higher, and had no effect on the germination rate of seeds, the seedling height, root length, root number, root-shoot ratio, root fresh weight, chlorophyll content, SOD and POD activities of roots were significantly increased. Inoculation of straw degradation strains could accelerate straw degradation and enhance stress resistance of maize seedlings.

Key words: corn stalk, fermentation, straw-degrading bacteria, maize seedlings, hydroponics