| 生物质炭对黑土吸附-解吸硝态氮性能的影响 |
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| 引用本文： | 王冰,赵闪闪,秦治家,高强,娄玉杰,刘淑霞.生物质炭对黑土吸附-解吸硝态氮性能的影响[J].农业环境科学学报,2016,35(1):115-121. |
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| 作者姓名： | 王冰 赵闪闪 秦治家 高强 娄玉杰 刘淑霞 |
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| 作者单位： | 1. 吉林农业大学资源与环境学院,长春130118;吉林省商品粮基地土壤资源可持续利用重点实验室,长春130118;2. 吉林省东辽县足民农业站,吉林东辽,136615;3. 吉林农业大学动物科技学院,长春,130118 |
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| 基金项目： | 吉林省科技发展计划项目(20110202);吉林省科技引导计划项目(201205057);公益性行业(农业)科研专项(20110303);现代农业产业技术体系建设专项(nycytx-38) |
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| 摘 要： | 为了探讨生物质炭对黑土吸附-解吸硝态氮性能的影响,减少黑土中硝态氮的淋失、提高氮肥利用率以及为农业废弃物资源化利用提供理论依据,采用培养试验,应用Langmuir方程和Freundlich方程,研究了添加不同来源(玉米秸秆、稻壳、松木)和不同添加比例(0.6%、1.2%、3.6%、6%)生物质炭对黑土中硝态氮(NO_3~--N)的吸附和解吸特征。结果表明,施用生物质炭可增加黑土对NO_3~--N的吸附量,且三种生物质炭的添加比例为3.6%时,土壤对NO_3~--N的吸附量最大;施用玉米秸秆生物质炭的黑土对NO_3~--N的吸附量最大(实际最大吸附量为0.929 mg·g~(-1)),施用松木生物质炭的黑土对NO_3~--N的吸附量最小(实际最大吸附量为0.578 mg·g~(-1))。施用生物质炭可降低黑土对NO_3~--N的解吸率,且三种生物质炭的添加比例为3.6%时,土壤对NO_3~--N的解吸率最低;添加玉米秸秆生物质炭的黑土对NO_3~--N的解吸率最低,添加松木生物质炭的黑土对NO_3~--N的解吸率最高。不同生物质炭对NO_3~--N的吸附能力表现为玉米秸秆稻壳松木;对其解吸能力表现为玉米秸秆稻壳松木。生物质炭及添加生物质炭的黑土对NO_3~--N的吸附过程符合Langmuir方程。
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| 关 键 词： | 玉米秸秆生物质炭 稻壳生物质炭 松木生物质炭 硝态氮 吸附 解吸 |
| 收稿时间： | 2015/7/31 0:00:00 |
Effect of biochar on adsorption-desorption characteristics of nitrate nitrogen in black soil |
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| WANG Bing,ZHAO Shan-shan,QIN Zhi-ji,GAO Qiang,LOU Yu-jie and LIU Shu-xia.Effect of biochar on adsorption-desorption characteristics of nitrate nitrogen in black soil[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2016,35(1):115-121. |
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| Authors: | WANG Bing ZHAO Shan-shan QIN Zhi-ji GAO Qiang LOU Yu-jie and LIU Shu-xia |
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| Institution: | College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China;Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, Changchun 130118, China,College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China;Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, Changchun 130118, China,Zu Min Agriculture Stands of Dongliao County, Jilin Province, Dongliao 136615, China,College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China;Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, Changchun 130118, China,College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China and College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China;Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, Changchun 130118, China |
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| Abstract: | It is well documented that biochar can adsorb nitrate nitrogen(NO3--N) from water. However, few studies were available on the effects of biochar applications on adsorption-desorption properties of NO3--N in soil. In this study, an incubation experiment was conducted to assess the effects of different biochars(corn-stalk biochar, rice-hull biochar and larch biochar) at four application rates(0.6%,1.2%, 3.6%, and 6%) on adsorption and desorption of NO3--N in black soil. Results showed that biochar applications increased NO3--N adsorption, with the highest adsorption capacity occurred in soil added with 3.6% biochar. Of three biochars, corn-stalk biochar had the highest NO3--N adsorption capacity, which was 0.929 mg·g-1, whereas larch biochar had the lowest NO3--N adsorption, with only 0.578 mg·g-1. Applications of biochars reduced the desorption rates of NO3--N from soil. The lowest desorption was found at a biochar rate of 3.6%. On the contrary, corn-stalk biochar had the lowest NO3--N desorption while larch biochar displayed the highest desorption. The adsorption ability of NO3--N by biochars was:corn-stalk biochars > rice-hull biochar > larch biochar, but the desorption was opposite. The isothermal adsorption of NO3--N on soil amended with biochars could be well described by Langmuir isothermal equation. |
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| Keywords: | corn-stalk biochar rice-hull biochar larch biochar nitrate nitrogen adsorption desorption |
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