Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (6): 1069-1077.DOI: 10.3969/j.issn.1004-1524.2021.06.12

• Environmental Science • Previous Articles     Next Articles

Characteristics of typical urban waste mixed aerobic composting and its effect on seedling growth

ZHU Shijun1(), JIN Shuquan1, WANG Feng1, HAN Yongjiang2, SUN Jie3   

  1. 1. Ningbo Academy of Agricultural Sciences, Ningbo 315040, China
    2. Ningbo Lvbao Environmental Protection Technology Co., Ltd., Ningbo 315181, China
    3. Ningbo Kaicheng Ecological Technology Co., Ltd., Ningbo 315157, China
  • Received:2020-10-28 Online:2021-06-25 Published:2021-06-25

Abstract:

In this study, garden waste, dried construction waste, and organic residue of kitchen waste were used for composting at different mixing ratios, and the temperature and nutrients changes during composting were studied. The final compost was mixed with seedling substrates to clarify its effect on germination and development of three kinds of vegetables (tomato, cucumber, cabbage). The results showed that the temperature of the mixture of garden waste and the mixture of garden waste and organic residue of kitchen waste rose to above 70 ℃ immediately, and slowly decreased to about 50 ℃ after 45 days during the composting. During this process, the organic matter, total nitrogen, alkali-hydrolyzable nitrogen contents and moisture content gradually decreased, while pH, electrical conductivity (EC), and contents of available phosphorus and available potassium remained stable. The final compost showed high EC value. However, when it was mixed with seedling substrate, it showed no significant adverse effect on the survival rate of vegetable seedlings under the experiment conditions. Thus, it showed potential of applying garden waste, dried construction waste, and organic residue of kitchen waste in agricultural production through composting

Key words: garden waste, dried construction waste, kitchen waste organic residue, compost, seedling cultivation

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