生物炭与硝化抑制剂对菜地综合温室效应的影响  

Effects of biochar and nitrification inhibitor on the global warming potentials in vegetable field

作　　者：李佳[1] 邓钧尹 周伟[2,3] 孙丽英[1] LI Jia;DENG Jun-yin;ZHOU Wei;SUN Li-ying(College of Applied Meteorology,Nanjing University of Information Science&Technology,Nanjing 210044,China;Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;Changshu Agro-ecological Experimental Station,Chinese Academy of Sciences,Changshu 215555,China)

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044 [2]中国科学院南京土壤研究所,江苏南京210008 [3]中国科学院常熟农业生态实验站,江苏常熟215555

出　　处：《江苏农业学报》2020年第5期1205-1211,共7页Jiangsu Journal of Agricultural Sciences

基　　金：国家重点研发计划项目(2018YFD0201203);国家自然科学基金项目(41501245)。

摘　　要：采用静态暗箱-气相色谱法评估氮肥分别配施生物炭和硝化抑制剂对菜地生态系统综合温室效应(GWP)和温室气体排放强度(GHGI)的影响。共设置3个田间处理:尿素(U)、尿素配施生物炭(UB)和尿素配施硝化抑制剂双氰胺(UDCD)。结果表明:与U处理相比,UDCD处理分别显著降低了N 2 O排放通量和GWP的27.1%(P<0.05)和29.1%(P<0.05),而对CH 4排放通量、蔬菜产量以及GHGI并没有显著影响。与U处理相比,UB处理对N 2 O排放通量、GWP和GHGI并无显著影响。与UB处理相比,UDCD处理分别显著降低了N 2 O排放通量和GWP的28.3%(P<0.05)和29.1%(P<0.05)。综合对比3种施肥方式的GWP和GHGI,发现氮肥配施硝化抑制剂DCD可以显著减少氮肥对环境的影响,因此在菜地可推荐使用尿素配施硝化抑制剂双氰胺(UDCD)施肥方案。Static opaque chamber-gas chromatography method was used to study the effects of nitrogen fertilizer combined with biochar and nitrification inhibitor respectively,on the global warming potential(GWP)and greenhouse gas intensity(GHGI)of ecosystem in vegetable field.Three following field treatments were set up:urea(U),urea combined with biochar(UB)and urea combined with nitrification inhibitor dicyandiamide(UDCD).The results showed that compared with U treatment,UDCD treatment significantly decreased the N 2 O emission flux and GWP by 27.1%(P<0.05)and 29.1%(P<0.05)respectively,but there were no significant effects on CH 4 emission flux,vegetable yield and GHGI.Compared with U treatment,UB treatment had no significant effects on N 2 O emission flux,GWP and GHGI.Compared with UB treatment,UDCD treatment significantly decreased N 2 O emission flux and GWP by 28.3%(P<0.05)and 29.1%(P<0.05),respectively.The nitrogen fertilizer combined with DCD is recommended for reducing the effect of nitrogen fertilizer on environment significantly by comprehensive comparison of GWP and GHGI under three fertilization modes.Therefore,the UDCD fertilizing scheme is recommend in vegetable field.

关 键 词：生物炭 硝化抑制剂 CH 4 N 2 O 菜地 综合温室效应 

分 类 号：S181[农业科学—农业基础科学]