... 总氮含量 ; 总氮浓度 nitrogen concentration in atmosphere 大气氮含量 soil nitrate nitrogen concentration 土壤硝态氮含量 ..
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采用田间试验及人工渗滤池试验方法，研究了土壤中硝态氮含量的影响因素。
An experiment in field and artificial penetration-filter pond test both were conducted to show factors affecting content of nitrate-nitrogen in soil in the present study.
土壤容重和有机质含量对硝态氮的垂直运移有很大的影响；
The vertical transport of nitrate-N was also affected by the soil bulk density and the organic matter content.
继续增加施氮量，土壤微生物量氮含量增加，但土壤中残留大量硝态氮，易淋溶损失。
Applying more nitrogen would increase the content of soil microbial biomass nitrogen, but might result in large amount of nitrate residue in soil and suspected to leaching loss.
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