Journal of Biology ›› 2021, Vol. 38 ›› Issue (4): 77-.doi: 10. 3969 / j. issn. 2095-1736. 2021. 04. 077

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Research on the effect of pig dung and cowdung in feeding earth worm with Pleurotusostreatusresidue

  

  1. 1. School of Agriculture, Tongren Polytechnic College, Tongren 554300, China; 2. Engineering Research Center forSpecial Aqutic Development and Improvement, Tongren 554300, China; 3. Engineering Research Center forBreeding Mount Fanjing Edible Fungi in Tongren, Tongren 554300, China
  • Online:2021-08-18 Published:2021-08-18

Abstract: In order to recycle the agricultural waste resources and to reduce the environmental pollution caused by agricultural waste inanimal husbandry and edible fungi production, the growth and reproduction effect of earthworms and its vermicompost effect were stud-ied by pot culture and free choice experiment. The results showed that the combination of pig dung and cow dung in the medium withPleurotusostreatusresidue could significantly improve the growth and reproduction efficiency of earthworm, the weight proportion of20% pig dung and 40% cow dung was the most suitable for the growth and reproduction of earthworm. The organic matter and C / N ra-tio of earthworm in each group decreased significantly after earthworm digestion, except the total nitrogen content in 40% cow dunggroup and 20% pig dung group. The contents of total N, total P, total K, available N, available P and available K in most substrategroups were significantly increased after earthworm digestion. The contents of mercury and lead in earthworms were not detected; thecontents of heavy metals such as copper and zinc in earthworms met the safety standards for feeding; the vermicompost was a high qual-ity organic fertilizer after being properly prepared.

Key words: earthworms, oyster mushrooms dregs, livestock and poultry dung, reutilization, organic fertilizer

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