施用生物炭与硝化抑制剂对菜地综合温室效应的影响

应用生态学报

施用生物炭与硝化抑制剂对菜地综合温室效应的影响

李博,李巧玲,范长华,孙丽英,熊正琴^**

(南京农业大学资源与环境科学学院/江苏省低碳农业与温室气体减排重点实验室, 南京 210095)

出版日期:2014-09-18 发布日期:2014-09-18

Effects of biochar and nitrification inhibitor incorporation on global warming potential of a vegetable field in Nanjing, China.

LI Bo, LI Qiao-ling, FAN Chang-hua, SUN Li-ying, XIONG Zheng-qin

(Jiangsu Province Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China)

Online:2014-09-18 Published:2014-09-18

摘要/Abstract

摘要：

采用静态暗箱-气相色谱法,研究施用生物炭与添加硝化抑制剂对菜地周年综合温室效应的影响.结果表明: 与不施用生物炭相比,施用生物炭处理N₂O和CH₄的综合温室效应增加8.7%~12.4%,蔬菜产量增加16.1%~52.5%,温室气体强度降低5.4%~28.7%.添加硝化抑制剂显著减少N₂O排放,不影响CH₄排放,综合温室效应减少17.5%~20.6%,蔬菜产量增加21.2%~40.1%,温室气体强度显著降低.混合施用生物炭与硝化抑制剂一方面增加蔬菜产量,另一方面显著增加综合温室效应(增幅为10.6%～11.2%).因此,在菜地添加硝化抑制剂,既能保证蔬菜产量又能减少温室气体排放,是合适的减排措施.

Abstract:

The influences of biochar and nitrification inhibitor incorporation on global warming potential (GWP) of a vegetable field were studied using the static chamber and gas chromatography method. Compared with the treatments without biochar addition, the annual GWP of N₂O and CH₄ and vegetable yield were increased by 8.7%-12.4% and 16.1%-52.5%, respectively, whereas the greenhouse gas intensity (GHGI) were decreased by 5.4%-28.7% following biochar amendment. Nitrification inhibitor significantly reduced the N₂O emission while had little influence on CH₄ emission, decreased GWP by 17.5%-20.6%, increased vegetable yield by 21.2%-40.1%, and decreased the GHGI significantly. The combined application of biochar and nitrification inhibitor significantly increased both vegetable yield and GWP, but to a greater extent for vegetable yield. Therefore, nitrification inhibitor incorporation could be served as an appropriate practice for increasing vegetable yield and mitigating GHG emissions in vegetable field.

李博,李巧玲,范长华,孙丽英,熊正琴**. 施用生物炭与硝化抑制剂对菜地综合温室效应的影响[J]. 应用生态学报.

LI Bo, LI Qiao-ling, FAN Chang-hua, SUN Li-ying, XIONG Zheng-qin. Effects of biochar and nitrification inhibitor incorporation on global warming potential of a vegetable field in Nanjing, China.[J]. Chinese Journal of Applied Ecology.