| 水稻秸秆生物质炭对土壤磷吸附影响的研究 |
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| 引用本文： | 张 朴,李仁英,吴洪生,李 霖,罗晶晶,汪方圆,高雅晓玲,肖 城,张 钱.水稻秸秆生物质炭对土壤磷吸附影响的研究[J].土壤,2018,50(2):264-269. |
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| 作者姓名： | 张 朴 李仁英 吴洪生 李 霖 罗晶晶 汪方圆 高雅晓玲 肖 城 张 钱 |
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| 作者单位： | 1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室,1.南京信息工程大学应用气象学院农业资源与环境系//江苏省农业气象重点实验室 |
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| 摘 要： | 本文以水稻秸秆为原料,分析了不同热解温度下生物炭的性质,并利用批处理实验,分析了生物炭添加量和热解温度对土壤磷吸附特性的影响。结果表明：随着热解温度的升高,生物炭的碳化程度、比表面积和磷含量增加。生物炭添加显著减少了土壤对磷的吸附量,而且随着生物炭热解温度的增加,土壤对磷的吸附量显著增加。Langmuir方程和Freundlich方程都能够较好地拟合生物炭对土壤磷的等温吸附。准一级动力学方程和准二级动力学方程可较好地描述生物炭对土壤磷吸附动力学的行为。通过以上研究结果可知,水稻秸秆生物炭可以减少土壤对磷的吸附并增加土壤有效磷的含量,因此在土壤改良方面具有一定的应用潜力。
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| 关 键 词： | 水稻秸秆 生物炭 热解温度 磷 吸附 |
| 收稿时间： | 2017/2/28 0:00:00 |
| 修稿时间： | 2017/3/23 0:00:00 |
Effect of Rice Straw Biochar on Phosphorus Adsorption in Paddy Soil |
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| ZHANG Pu,LI Renying,WU Hongsheng,LI Lin,LUO Jingjing,WANG Fangyuan,GAO Yaxiaoling,XIAO Cheng and ZHANG Qian.Effect of Rice Straw Biochar on Phosphorus Adsorption in Paddy Soil[J].Soils,2018,50(2):264-269. |
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| Authors: | ZHANG Pu LI Renying WU Hongsheng LI Lin LUO Jingjing WANG Fangyuan GAO Yaxiaoling XIAO Cheng and ZHANG Qian |
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| Institution: | 1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology,1. Jiangsu Key Laboratory of Agricultural Meteorology//Department of Agricultural Resources and Environment,College of Applied Meteorology,Nanjing University of Information Science Technology |
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| Abstract: | Properties of biochar derived from rice straw were analysed. The effects of addition amount and pyrolysis temperature of rice straw biochar on the adsorption of phosphorus (P) were also investigated by batch experiments. The results showed that carbonized degree, specific surface area and phosphorus concentration of the biochar increased with increase of pyrolysis temperature. Compared with the control (without biochar), the addition of biochar reduced adsorption amount of phosphorus and inhibited adsorption of phosphorus in soil. Moreover, adsorption amount of P was affected significantly by pyrolysis temperature, increasing with the increase of pyrolysis temperature. Langmuir isotherm equation and Freundlich isotherm equation could better describe the adsorption isotherm behavior of soil phosphorus. Pseudo first-order kinetics and Pseudo second-order kinetics could be used to describe the behavior of the soil phosphorus adsorption kinetics. The above results showed that the rice straw biochar could reduce adsorption of phosphorus in the soil and increase available phosphorus content of soil. Therefore, it has a great potential in soil fertilizer improvement. |
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| Keywords: | Rice straw Biochar Pyrolysis temperature Phosphorus Adsorption |
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