| 富含磁性铁纳米颗粒的生物炭对菌根侵染、植物生长、营养吸收及土壤质量改善的影响 |
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| 作者姓名： | S.JOSEPH H. M. ANAWAR P. STORER P. BLACKWELL C. CHIA Y. LIN P. MUNROE S. DONNE J. HORVAT J. L. WANG Z. M. SOLAIMAN |
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| 作者单位： | School of Materials Science and Engineering,
University of New South Wales, Sydney, NSW 2052
(Australia) |
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| 摘 要： |
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Effects of enriched biochars containing magnetic iron
nanoparticles
on mycorrhizal colonisation, plant growth,
nutrient
uptake and soil quality improvement |
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| S.JOSEPH,H. M. ANAWAR,P. STORER,P. BLACKWELL,C. CHIA,Y. LIN,P. MUNROE,S. DONNE,J. HORVAT,J. L. WANG,Z. M. SOLAIMAN.Effects of enriched biochars containing magnetic iron
nanoparticles
on mycorrhizal colonisation, plant growth,
nutrient
uptake and soil quality improvement[J].Pedosphere,2015,25(5):749-760. |
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| Authors: | SJOSEPH H M ANAWAR P STORER P BLACKWELL C CHIA Y LIN P MUNROE S DONNE J HORVAT J L WANG and Z M SOLAIMAN |
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| Institution: | School of Materials Science and Engineering,
University of New South Wales, Sydney, NSW 2052
(Australia) |
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| Abstract: | At present, there is little commercial sale of biochar,
since farmers find they can not gain a return on their
investment in this amendment in the first few years after
its application, because of the high cost associated with
large application rates. To overcome this constraint,
development of artificially aged enriched biochar-mineral
complexes (BMCs), having a higher mineral content, surface
functionality, exchangeable cations, high concentration of
magnetic iron (Fe) nanoparticles, and higher
water-extractable organic compounds has been undertaken by
a combined team of researchers and a commercial company.~%
Two biochars produced under different pyrolysis conditions
were activated with a phosphoric acid treatment. A mixture
of clay, chicken litter, and minerals were added to the
biochar, and then this composite was torrefied at either
180 or 220 $^\circ$C. In this study a pot experiment was
carried out in glasshouse conditions to determine the
effects of four different BMCs, with different formulations
applied at rates of 100 and 200 kg ha$^{-1}$, on the
mycorrhizal colonisation, wheat growth and nutrient uptake,
and soil quality improvement. It was found that the
phosphorus (P) and nitrogen uptake in wheat shoots were
significantly greater for a low application rate of BMCs
(100 kg ha$^{-1}$).~The present formulation of BMC was
effective in enhancing growth of wheat at low application
rate (100 kg ha$^{-1}$).~The increase in growth appeared
due to an increase in P uptake in the plants that could be
partly attributed to an increase in mycorrhizal
colonisation and partly due to the properties of the BMC. |
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| Keywords: | biochar-mineral complexes Fe nanoparticles P
uptake redox reactions |
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