文章摘要
李涵,来张汇,吴代赦,吴山.黑曲霉对生物炭中磷释放及形态转化的影响[J].农业环境科学学报,2021,40(9):1915-1922.
黑曲霉对生物炭中磷释放及形态转化的影响
Effects of Aspergillus niger on the release and transformation of phosphorus in biochar
投稿时间:2021-02-09  
DOI:10.11654/jaes.2021-0174
中文关键词: 土壤  黑曲霉  生物炭  磷的释放  磷的形态转化
英文关键词: soil  Aspergillus niger  biochar  release of phosphorus  transformation of phosphorus
基金项目:国家重点研发计划项目(2017YFD0800900)
作者单位E-mail
李涵 南昌大学资源环境与化工学院, 南昌 330031  
来张汇 南昌大学资源环境与化工学院, 南昌 330031  
吴代赦 南昌大学资源环境与化工学院, 南昌 330031
南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330031 
 
吴山 南昌大学资源环境与化工学院, 南昌 330031 wushan@ncu.edu.cn 
摘要点击次数: 919
全文下载次数: 940
中文摘要:
      为了解解磷真菌对生物炭中磷的释放及形态转化的影响,以污泥和水稻秸秆为原料,分别在400℃和700℃下制备得到两种生物炭,然后从土壤中筛选得到一株有解磷能力的黑曲霉,并以生物炭为唯一磷源进行培养,研究黑曲霉存在下生物炭中磷的释放和形态转化。结果表明:黑曲霉的存在使污泥生物炭中磷的释放量从0.73 mg·g-1提高到78.55 mg·g-1,使秸秆生物炭中磷的释放量提高了50%以上。热解温度对污泥生物炭中磷的释放具有重要影响,700℃下制备的污泥生物炭释放的磷比400℃下高出46%,但对秸秆生物炭的影响不显著。生物炭直接释放出的磷主要为焦磷酸盐,在黑曲霉的作用下,磷的主要形态由焦磷酸盐转为正磷酸盐。研究表明,黑曲霉能促进生物炭中磷的释放与形态转化,有利于增大生物炭中有效态磷的含量,进而提高生物炭在土壤领域的应用价值。
英文摘要:
      This study aimes to understand the release and transformation mechanism of phosphorus from biochar in the soil in the presence of phosphate solubilizing fungi. Two kinds of biochar were prepared using pyrolyzing sludge and rice straw at 400℃ and 700℃ in anaerobic conditions. A strain with phosphate-solubilizing ability, Aspergillus niger, was screened from the soil, and biochar was used as the only phosphorus source while culturing Aspergillus niger for the study. The results showed that the release of phosphorus from sludge biochar increased from 0.73 mg·g-1 to 78.55 mg·g-1, and from straw biochar, increased by more than 50%. The pyrolytic temperature of biomass had an important effect on the release of phosphorus in sludge biochar. The release of phosphorus from sludge biochar prepared at 700℃ was 46% higher than that released from sludge biochar prepared at 400℃, but no obvious effect of pyrolytic temperature was exhibited for rice straw biochar. The speciation of phosphorus released from biochar was pyrophosphate in the absence of Aspergillus niger, while orthophosphate was the dominant species in the microcosm experiment with Aspergillus niger. This study indicates that Aspergillus niger can promote the release and transformation of phosphorus in biochar, which can elevate the levels of phytoavailable phosphate in soil and further improve the application of biochar.
HTML    查看全文   查看/发表评论  下载PDF阅读器