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当前位置: 首页 > 文章 > 添加生物黑炭对茶园土壤CO_2、N_2O排放的影响 农业环境科学学报 2015 (05) 1009-1016
Position: Home > Articles > Effects of Biochar on CO_2 and N_2O Emissions from Tea Garden Soils Journal of Agro-Environment Science 2015 (05) 1009-1016

添加生物黑炭对茶园土壤CO_2、N_2O排放的影响

作  者：
陈玉真;王峰;尤志明;吴志丹;江福英;张磊;翁伯琦
单  位：
福建省农业科学院茶叶研究所;福建省农业科学院农业生态研究所
关键词：
生物黑炭;茶园土壤;CO2排放;N2O排放
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排放量显著高于黄壤,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排放无显著影响;高量的生物黑炭处理(H3、H4)则显著增加土壤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p H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。
译  名：
Effects of Biochar on CO_2 and N_2O Emissions from Tea Garden Soils
作  者：
CHEN Yu-zhen;WANG Feng;YOU Zhi-ming;WU Zhi-dan;JIANG Fu-ying;ZHANG Lei;WENG Bo-qi;Tea Research Institute, Fujian Academy of Agricultural Sciences;Agriculture Ecology Institute, Fujian Academy of Agricultural Sciences;
关键词：
biochar;;tea garden soil;;CO2 emission;;N2O emission
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 N2 O 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 N2 O emissions and denitrification rates from two soils in a dose-dependent manner. At higher biochar rates(H2, H3 and H4), N2 O flux and denitrification rates decreased by 37% to 63%(P<0.05)and22% to 54%(P<0.05), respectively, in two soils. The mechanisms of CO2 and N2O emission inhibition by biochar[p H value, inorganic nitrogen(NH+4and NO-3)and nitrification rates] were discussed in this paper.

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