Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (7): 1680-1689.DOI: 10.3969/j.issn.1004-1524.20220991

• Environmental Science • Previous Articles     Next Articles

Study on composting method of green waste and its potential in replacing peat

WANG Ke1(), SHAO Yeyao2, ZHANG Peiyun2, DU Yanchun2, XU Qianglong2, WANG Yanyan2, RUAN Wenbin2, XU Sijie2, GE Jieke2, YE Duo2, LIU Peng2, XING Chenghua1,*()   

  1. 1. School of Agriculture, Jinhua Polytechnic, Jinhua 321017, Zhejiang, China
    2. Botanical Laboratory, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
  • Received:2022-07-04 Online:2023-07-25 Published:2023-08-17
  • Contact: XING Chenghua

Abstract:

To reveal the effect of inoculation of strains on composting of green waste and test the potential of composting product in the substrate for plant cultivation instead of peat, Phanerochaete chrysosporium and Trichoderma koningii were selected as test materials. Firstly, compatibility experiment and inoculation timing were carried out to optimize the inoculation sequence. Then, the water content, inoculation amount and ratios of strains were optimized by single-factor experiments and surface response analysis. Under the optimized conditions, the green waste was composted, and the dynamics of temperature, nutrients and seed germination index were determined throughout the process. Finally, the compost products were mixed with peat to test its potential in the cultivation of Epipremnum aureum. After 30 d, the influence on plant growth and chlorophyll content was measured. It was shown that inoculation of Phanerochaete chrysosporium first and Trichoderma koningii 3 days later could enhance the lignin and cellulose degradation rate. The optimized composting conditions were as follows: the water content was 60%, the inoculation amount was 15%, the ratio of Trichoderma koningii to Phanerochaete chrysosporium was 1.1∶2. Under these conditions, the degradation rate of lignin and cellulose reached 28.37% and 31.56%, respectively. During composting, the experiment group with inoculation of strains completed first, and the contents of total humic acid, available nitrogen and available phosphorus were higher, as well as the seed germination index met the standard requirement earlier. Compared with the other designs, when peat, vermiculite and compost products were mixed with the ratio of 5∶3∶2, it promoted plant growth, as the plant height, root length, biomass accumulation and chlorophyll content were higher. In general, composting of green waste with inoculation of Phanerochaete chrysosporium and Trichoderma koningii could get mature faster and improve the quality of product. Mixture of peat, vermiculite and compost products by the ratio of 5∶3∶2 could be used as the substrate for plant cultivation and reduce peat consumption.

Key words: green waste, compost, Phanerochaete chrysosporium, Trichoderma koningii

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