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.
出处
《生态学杂志》
CAS
CSCD
北大核心
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 )
关键词
长效氮肥
CH4排放
N2O排放
黑土
slow-releasing nitrogen fertilizers,CH 4 emission,N 2O emission,black earth soil.
