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首页> 外文会议>Third International Symposium on Non-Co_2 Greenhouse Gases: Scientific Understanding, Control Options and Policy Aspects Jan 21-23, 2002 Maastricht, The Netherlands >Effect of urea and nitrification inhibitors on methane consumption
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Effect of urea and nitrification inhibitors on methane consumption

机译：尿素和硝化抑制剂对甲烷消耗的影响

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摘要

Effect of fertilizer urea and urea mixed with different doses of two nitrification inhibitors viz. dicyandiamide (DCD) and karanjin [a furanoflavonoid, obtained from karanja (Pon-gamia glabra Vent.) seeds] on methane (CH_4) consumption was examined in an alluvial soil (typic ustochrept) maintained at field capacity. Mean CH_4 consumption rate, as well as total CH_4 consumption was lower on the addition of karanjin due to slower nitrification and higher conservation of NH_4~+ released from applied urea. Addition of urea led to 17% reduction of total methane consumption while urea combined with karanjin and DCD had 50-64% and 19-34% reduction, respectively. Karanjin had higher nitrification inhibition (62-75%) than DCD (9-42%) at the end of incubation period. Application of nitrification inhibitors may appreciably retard CH_4 consumption and can increase its emission.
机译：肥料尿素和尿素与不同剂量的两种硝化抑制剂混合的效果。在保持田间持水量的冲积土壤（典型ustochrept）中，检查了甲烷（CH_4）消耗量中的双氰胺（DCD）和甘兰金（一种呋喃类黄酮，得自karanja（Pon-gamia glabra Vent。）种子）。加入硝酸钾和降低尿素释放的NH_4〜+的保守性后，添加了卡兰金后，平均CH_4消耗率以及CH_4的总消耗量降低。尿素的添加使总甲烷消耗量减少了17％，而尿素与karanjin和DCD的组合分别减少了50-64％和19-34％。在培养期结束时，Karanjin的硝化抑制作用（62-75％）比DCD（9-42％）高。硝化抑制剂的应用可能会明显延迟CH_4的消耗并增加其排放。

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