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%。而CH4的排放却略有增加 Long-acting ammonium bicarbonate (long-carbon) and long-acting urea (long-urea) significantly reduced N 2 O emissions from black earth maize by applying long-term nitrogen fertilizers on black soil maize fields and paddy fields. Compared with the application of normal urea, its emissions decreased by 59.2% and 73.3% respectively. Long carbon and long urine can also promote the absorption of CH4 in black earth corn. After long-term use of black soil in paddy rice fields, the emission of N 2 O decreased by 61%. CH4 emissions have slightly increased