柯林斯詞典nitrification /?na?tr?f??ke???n/ 1. N the oxidation of the ammonium compounds in dead organic material into nitrites and nitrates by soil nitrobacteria, making nitrogen available to plants 硝化作用→see also nitrogen cycle 返回 nitrification劍橋詞典the process in which bacteria in the soil use oxygen to change compounds of nitrogen in dead plant material into nitrates which plants can then absorb as food 硝化作用(土壤中的細(xì)菌利用氧氣,將植物腐殖質(zhì)中的含氮化合物轉(zhuǎn)化成可被吸收的硝酸鹽的過程) 返回 nitrification