INHIBITORY EFFECT OF LOW PARTIAL PRESSURES OF ACETYLENE ON NITRIFICATION
INHIBITORY EFFECT OF LOW PARTIAL PRESSURES OF ACETYLENE ON NITRIFICATION
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DOI：
10.1016/0038-0717(82)90041-4
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发表时间：
1982-01-01
影响因子：
9.7
通讯作者：
ROSSWALL, T
中科院分区：
文献类型：
--
作者：
BERG, P;KLEMEDTSSON, L;ROSSWALL, T
在两种农业土壤中研究了C2H2对硝化作用的抑制作用。 C2H2 分压为 10 Pa 时，硝化作用被完全抑制，该分压低于之前报道的土壤。在 0.01 Pa 的压力下，没有 C2H2 的烧瓶和有 C2H2 的烧瓶之间的硝酸盐生成速率没有差异，而在 0.1 Pa C2H2 的压力下对硝化作用有影响。在 0.1 Pa 下，前 3 天没有观察到抑制；此后硝化作用受到部分抑制。直到去除C2H2后7天，抑制作用才停止。当使用乙炔抑制法（通常是 10 kPa 的 C2H2）测定反硝化速率时，应注意硝化作用对低浓度 C2H2 的敏感性。
The inhibiting effect of C2H2 on nitrification was investigated in 2 agricultural soils. Nitrification was totally inhibited at 10 Pa partial pressure of C2H2 which is lower than previously reported for soils. There were no differences in rates of nitrate production between flasks without C2H2 and flasks with C2H2 at 0.01 Pa, while there was an effect on nitrification at 0.1 Pa C2H2. At 0.1 Pa no inhibition was noted during the first 3 days; after this period nitrification was partially inhibited. The inhibiting effect did not cease until 7 days after removal of C2H2. The sensitivity of nitrification to low concentrations of C2H2 should be noted when denitrification rates are determined by the use of the acetylene inhibition method (usually C2H2 at 10 kPa).