文章摘要
董达, 王宇婕, 姜培坤, 吴家森.炭基肥和竹炭对土壤氮素淋失和微生物的影响[J].水土保持学报,2021,35(2):144~151
炭基肥和竹炭对土壤氮素淋失和微生物的影响
Effects of Carbon Based Fertilizer and Bamboo Charcoal on Soil Nitrogen Loss and Microorganism
投稿时间:2020-10-12  
DOI:10.13870/j.cnki.stbcxb.2021.02.020
中文关键词: 竹炭  炭基缓释肥  氮素流失  群落结构
英文关键词: bamboo charcoal  carbon-based slow release fertilizer  nitrogen loss  community structure
基金项目:浙江省公益技术应用研究项目(2017C33111);国家自然科学基金项目(41601234);浙江省博士后科研项目(ZJ2017122);校科研发展基金项目(2018FR053)
作者单位E-mail
董达, 王宇婕, 姜培坤, 吴家森 浙江农林大学环境与资源学院, 浙江省土壤污染生物修复重点实验室, 杭州 311300 jswu@zafu.edu.cn 
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中文摘要:
      为了研究竹炭和炭基缓释肥添加对毛竹林土壤氮素流失和细菌群落结构的影响,采用室内土柱淋溶试验,测定了淋溶水中NH4+—N和NO3-—N浓度,分析了细菌群落多样性和组成。结果表明,与对照相比,炭基缓释肥的添加可以使土柱NH4+—N和NO3-—N累积淋溶量分别降低12.5%和13.6%。此外,竹炭的添加可以显著降低NH4+—N累积淋溶量(P<0.05),但是对NO3-—N的影响不显著。炭基缓释肥的添加可以增加土壤Nitrospira(硝化螺菌属)、Nitrosospria(亚硝化螺菌属)和Nitrobacter(硝化杆菌属)细菌的相对丰度,提高下层淋溶土壤反硝化优势菌群(丰度>0.1%)Burkholderia(伯克霍尔德菌属)、Cupriavidus(贪铜菌属)和Bradyrhizobium(慢生根瘤菌属)的相对丰度。炭基缓释肥添加对土壤NH4+—N和NO3-—N的淋溶影响可能与土壤氮素循环微生物密切相关。
英文摘要:
      In order to study the effects of bamboo charcoal and carbon-based slow release fertilizer on soil nitrogen loss and bacterial community structure in Moso bamboo forest soil, the concentrations of NH4+—N and NO3-—N in leaching water were measured by soil column experiment in laboratory, and the diversity and composition of bacterial community were analyzed. The results showed that compared with the control, the cumulative losses of NH4+—N and NO3-—N in the leachate of soil columns with the addition of carbon-based slow-release fertilizer could be reduced by 12.5% and 13.6% (P<0.05), respectively. In addition, the addition of bamboo charcoal could significantly reduce the cumulative losses of NH4+—N, but the effect on NO3-—N was not significant. The addition of carbon based slow-release fertilizer could increase the relative abundance of Nitrospira, Nitrospora and Nitrobacter, and increase the relative abundance of Burkholderia, Cupriavidus and Bradyrhizobium which is the dominant denitrification bacteria (abundance > 0.1%) in the lower leaching soil. The leaching effect of carbon-based slow release fertilizer on soil NH4+—N and NO3-—N may be closely related to soil nitrogen cycling microorganisms.
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