文章摘要
陈玉真,王峰,尤志明,吴志丹,江福英,张磊,翁伯琦.添加生物黑炭对茶园土壤CO2、N2O排放的影响[J].农业环境科学学报,2015,34(5):1009-1016.
添加生物黑炭对茶园土壤CO2、N2O排放的影响
Effects of Biochar on CO2 and N2O Emissions from Tea Garden Soils
投稿时间:2015-01-03  
DOI:10.11654/jaes.2015.05.026
中文关键词: 生物黑炭  茶园土壤  CO2排放  N2O排放
英文关键词: biochar  tea garden soil  CO2 emission  N2O emission
基金项目:福建省公益类科研院所专项(2014R1012-10);国家科技支撑计划(2014BAD15B01);国家茶产业体系宁德站(CARS-23-9);福建省农业科学院创新团队项目(STIT-Ⅰ-0302;STIT-Ⅰ-0305)
作者单位E-mail
陈玉真 福建省农业科学院茶叶研究所, 福建 福安 355015  
王峰 福建省农业科学院茶叶研究所, 福建 福安 355015  
尤志明 福建省农业科学院茶叶研究所, 福建 福安 355015 847842412@qq.com 
吴志丹 福建省农业科学院茶叶研究所, 福建 福安 355015  
江福英 福建省农业科学院茶叶研究所, 福建 福安 355015  
张磊 福建省农业科学院茶叶研究所, 福建 福安 355015  
翁伯琦 福建省农业科学院农业生态研究所, 福州 350013  
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中文摘要:
      采用室内培养试验,研究了不同生物黑炭施用量对两种茶园土壤(红壤和黄壤)CO2、N2O排放特征的影响。生物黑炭用量设5个水平:H0(0 g·kg-1)、H1(3.56 g·kg-1)、H2(7.11 g·kg-1)、H3(14.22 g·kg-1)、H4(28.44 g·kg-1).结果表明:红壤茶园土壤CO2排放量显着高于黄壤,N2O排放总量则低于黄壤;与H0处理相比,施用低量的生物黑炭(H1)对两种茶园土壤CO2排放无显着影响;高量的生物黑炭处理(H3、H4)则显着增加土壤CO2排放量,增幅为20%~47%(P<0.05).生物黑炭施用后(H2、H3、H4)明显降低两种茶园土壤N2O释放速率及反硝化损失率,土壤N2O排放总量降幅为37%~63%(P<0.05),反硝化损失量降幅22%~54%(P<0.05),且均随着生物黑炭施用量增加而增大。此外,从土壤pH值、无机氮含量和硝化率角度,探讨了生物黑炭影响茶园土壤CO2和N2O排放的因素。
英文摘要:
      Biochar has shown many benefits in the agriculture and environment. This study investigated the effects of biochar additions on carbon dioxide(CO2) and nitrous oxide(N2O) emissions from tea garden soils(red soil and yellow soil) in an incubation experiment. The soils were treated with varying doses of biochar(H0=0 g·kg-1, H1=3.56 g·kg-1, H2=7.11 g·kg-1, H3=14.22 g·kg-1 and H4=28.44 g·kg-1). The gases were sampled on the day 2, 4, 6, 10, 14, 18, 25, 32, 39 and 46 of treatment. The CO2 emissions from red tea garden soil were higher than those from yellow tea garden soil(P<0.05), while the N2O emissions were less in red than in yellow tea garden soil. Compared with control(H0), biochar at H1 had no significant effects on CO2 flux rates, but significantly increased CO2 emission by 20% to 47%(P<0.05) in two soils at H3 and H4. However, biochar treatments reduced N2O emissions and denitrification rates from two soils in a dose-dependent manner. At higher biochar rates(H2, H3 and H4), N2O flux and denitrification rates decreased by 37% to 63%(P<0.05) and 22% to 54%(P<0.05), respectively, in two soils. The mechanisms of CO2 and N2O emission inhibition by biochar[pH value, inorganic nitrogen(NH4+ and NO3-) and nitrification rates] were discussed in this paper.
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