When the infiltration ammonium concentration is high, the main factors are nitration of ammonium nitrogen by biological actions, dispersivity and permeability of the soil.
当入渗铵态氮浓度较大时，影响铵态氮迁移转化的显著因素是生物作用导致的铵态氮的硝化，以及土壤的渗透系数、弥散度等因素。
Neither ammonium nitrogen nor nitrate nitrogen with high concentration in the medium helped to the growth of bacteria.
培养基中高浓度的氮不论是铵态氮还是硝态氮均不利于菌株的生长；
Neither ammonium nitrogen nor nitrate nitrogen with high concentration in the medium helped to the growth of bacteria.
培养基中高浓度的氮不论是铵态氮还是硝态氮均不利于菌株的生长；
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