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| Effects of organic manure from animal carcasses on Brassiacampestris L. growth and soil heavy metal accumulation |
| Received:November 17, 2015 |
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| KeyWord:harmlessly treated animal carcass manure;soil fertilization;Brassiacampestris L.;heavy metal;accumulation |
| Author Name | Affiliation | E-mail | | ZHAI Zhen | Institute of Natural Resources and Regional Planning Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | XIONG Bo | Beijing Agricultural Machinery Testing Extension Station, Beijing 100079, China | | | ZHANG Li | Beijing Agricultural Machinery Testing Extension Station, Beijing 100079, China | | | JIANG Bin | Beijing Agricultural Machinery Testing Extension Station, Beijing 100079, China | | | LI Chuan-you | Beijing Agricultural Machinery Testing Extension Station, Beijing 100079, China | | | PANG Huan-cheng | Institute of Natural Resources and Regional Planning Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | LI Yu-yi | Institute of Natural Resources and Regional Planning Chinese Academy of Agricultural Sciences, Beijing 100081, China | liyuyi@caas.cn |
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| Abstract: |
| A pot experiment was conducted to explore the feasibility of applying harmlessly-treated animal carcass manure from livestock and poultry farms to vegetable cultivation. The growth of Brassiacampestris L. and soil heavy metal content were measured under three different treatments, including chemical fertilizer(NPK) only, combined chemical fertilizer plus manure(NPK+M), and combined chemical fertilizer plus double manure(NPK+2M). Results showed that both NPK+M and NPK+2M significantly increased shoot dry weight by 50.53%~221.05%, compared with NPK(P<0.05). In NPK+2M treatment, relative chlorophyll content(SPAD) in fresh leaves and leaf net photosynthetic rate significantly increased by 22.85% and 21.98%, respectively, as compared with NPK treatment(P<0.05). Activities of superoxide dismutase(SOD), catalase(CAT), and peroxidase(POD) were found to be the highest, meanwhile maloaldehyde(MDA) was lowest in NPK+2M treatment. Compared with NPK, both NPK+M and NPK+2M increased soil Cr, Cu, Cd and Pb concentrations, but Cu and Pb content was not different between NPK+2M and NPK treatment(P<0.05). However, the content of heavy metals in NPK+2M was far lower than the class II limits of the soil environment quality standards. In addition, the heavy metal content in Brassiacampestris L. aboveground and belowground parts in NPK+2M showed no significant increases, compared to NPK treatment(P >0.05), and the Cr, Cd and Pb content in the aboveground part was much lower than the National Food Standards for vegetables. These results would shed light on the safe use of harmlessly-treated animal carcasses. |
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