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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (28): 29-33.doi: 10.11924/j.issn.1000-6850.casb15030234

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Effects of Different Proportions of Sludge Medium on the Growth of Two Herbs

Wang Boyu, Guo Jianbin   

  1. (School of Soil and Water Conservation, Beijing Forestry University/Key Laboratory of Soil and Water Conservation & Desertification Combating of Ministry of Education, Beijing 100083)
  • Received:2015-03-27 Revised:2015-08-18 Accepted:2015-05-25 Online:2015-10-27 Published:2015-10-27

Abstract: In order to provide a scientific theory for the rational use of municipal sewage sludge in Beijing, sewage sludge of Xiaohongmen sludge transfer station was used as study material, the effects of different proportions of sludge treatment on the growth of Festuca arundinacea and Lolium were analyzed, soil conventional analytical methods were used to analyze the sludge medium, the growth and physiological indices of the two herbs were compared through the comparative test. The results showed that the application of sludge significantly altered the soil biochemistry index, then affected the growth and development of plant. The growth indicators of Festuca arundinacea and Lolium showed an “increase-decline” trend with the increase of the application of raw sludge. For the mixed sludge type, 50% raw sludge and 50% raw dewatered sludge cake were more conducive to the germination and growth of grass seed. When its proportion exceeded 60%, the sludge would inhibit the germination and growth of plant. In addition, the chlorophyll content was significantly higher under sewage sludge treatment, and the content of MDA also had significant change. The results could provide theoretical guidance for the use of sludge technology in mining rehabilitation.