Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (4): 901-908.DOI: 10.3969/j.issn.1004-1524.20240786

• Environmental Science • Previous Articles     Next Articles

Study on bioconversion process of gibberellin fermentation residue with fly maggots (Lucilia sericata)

LU Nanyang1,2(), ZHAO Tinglei1,2, ZHOU Ying2, YAO Yanlai1, LI Penghao1, HONG Chunlai1, ZHU Weijing1, HONG Leidong1, ZHANG Tao1, ZHU Fengxiang1,*()   

  1. 1. Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    2. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2024-09-06 Online:2025-04-25 Published:2025-05-09

Abstract:

To realize the high-value utilization of gibberellin fermentation residue resources, the effects on the bioconversion efficiency of pig manure and gibberellin fermentation residue under different ratios, inoculum amounts and pH values with fly maggots (Lucilia sericata) larvae were comprehensively evaluated in this study. The results showed that after adjusting the pH of the initial gibberellin fermentation residue, when pig manure and gibberellin fermentation residue was mixed at the ratio of 80%∶20% (mass fraction, the same as below), 60%∶40%, 40%∶60%, the bioconversion rate was 14.29%, 13.34% and 11.57%, respectively. When pig manure and gibberellin fermentation residue was mixed at the ratio of 3∶2, the bioconversion rates of the treatment groups with inoculation amount ranging from 3.0% to 7.5% were 10.48%-15.02%. Given the cost and the yield of fly maggots, the inoculum amount of 3.0% was appropriate. When pig manure and gibberellin fermentation residue was mixed at the ratio of 3∶2, the pH of the mixture should be 6.5-7.5. In general, the bioconversion efficiency of pig manure and gibberellin fermentation residue with fly maggots could be improved by regulating the mix ratios of pig manure and gibberellin fermentation residue, inoculum amount and pH value, to increase the additional value of gibberellin fermentation residue.

Key words: fly maggot (Lucilia sericata), pig manure, gibberellin fermentation residue, inoculum amount

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