Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (24): 136-140.doi: 10.11924/j.issn.1000-6850.casb16030152

Special Issue: 园艺

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Effect of Two Microbial Agents on Nitrogen Dynamic Change in High-Temperature Flower and Vegetable Straw Compost

Xu Chunyu1,2, Zhang Shiying1,2, Xia Yunsheng1,2, Pan Liyuan2,3, Duan Hongping1,2, Zhang Naiming1,2,   

  1. (1Yunnan Engineering Laboratory of Soil Fertility and Pollution Remediation, Kunming 650201;2College of Resources and Environment Science, Yunnan Agricultural University, Kunming 650201;3College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201)
  • Received:2016-03-19 Revised:2016-04-10 Accepted:2016-04-20 Online:2016-08-29 Published:2016-08-29

Abstract: The aims were to find the simple and effective utilizing methods of flower and vegetable straw, and reduce the non-point source pollution in Dianchi Valley. Through the compost experiment, after inoculation of microbial agents Nongguan and Weiyuan, the change rules of temperature, total-N, water-soluble NH4 -N, water-soluble NO3--N followed with time in high temperature compost were studied with two ways of turning and non-turning. The results showed that the three treatments of non-turning were anaerobic fermentation, the low fermentation rate was harder to maturity in the short time because of the anaerobic fermentation condition. In the process of turning, the control samples had a slow temperature rise process, the pyrolysis stage was short, the T-N took a toll and the quality of compost was poor. Compared with the control samples, after adding the microbial agents Nongguan, the test samples entered the pyrolysis stage 3 days in advance and the high temperature decomposing duration extended 4 days, the content of T-N decreased by 10.9%, water-soluble NH4 -N decreased by 24.7%, water-soluble NO3--N increased by 14.0%. Compared with the control samples, after adding the microbial agents Weiyuan, the test samples entered the pyrolysis stage 5 days in advance and the high temperature decomposing duration extended 6 days, the content of T-N decreased by 24.1%, water-soluble NH4 -N decreased by 29.3%, water-soluble NO3--N increased by 24.2%. The inoculation of microbial agents could promote the transformation of water-soluble NH4 -N to water-soluble NO3--N, reduce the density of the compost. Comparing the two microbial agents, Weiyuan had higher quality organic fertilizer than Nongguan. The inoculation of microbial agents in the process of turning could accelerate the vegetable and flower straw composting process, improve the quality of composting products, the method was simple and easy, and suitable to be popularized in Dianchi Valley.

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