长效氮肥施用对黑土水旱田CH_4和N_2O排放的影响  

Effect of slow-releasing nitrogen fertilizers on CH_4 and N_2O emission in maize and rice fields in black earth soil

作　　者：梁巍[1] 张颖[1] 岳进[1] 吴劼[1] 史奕[1] 黄国宏[1] 

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态过程重点实验室,沈阳110016

出　　处：《生态学杂志》2004年第3期44-48,共5页Chinese Journal of Ecology

基　　金：国家重点基础研究发展规划资助项目 (G19990 1180 5 )

摘　　要：通过在黑土玉米地与水稻田施用长效氮肥后发现 ,长效碳酸氢铵 (长碳 )与长效尿素(长尿 )能显著减少黑土玉米地N2 O的排放。与施用普通尿素相比 ,其排放量分别减少了5 9 2 %和 73 3%。长碳和长尿还能促进黑土玉米地对CH4的吸收作用。黑土水稻田施用长尿后 ,N2 O的排放减少了 6 1%。Field experiments were conducted to investigate the influence of slow-releasing ammonium bicarbonate and slow-releasing urea on N 2O and CH 4 emission in maize and rice fields.The results showed that the application of slow-releasing ammonium bicarbonate and slow-releasing urea could significantly reduce N 2O emission in maize field by 59 2% and by 73 3% in rice field,respectively,compared with that of urea.These two N fertilizers could also enhance the uptake of CH 4 in maize fields.N 2O emission in rice fields was depressed by 61% in the treatment of slow-releasing urea,whereas CH 4 emission had a slightly enhancement.

关 键 词：长效氮肥 CH4排放 N2O排放 黑土 

分 类 号：S158[农业科学—土壤学]