leaf total nitrogen concentration
changes in soil organic carbon and total nitrogen
Content of total nitrogen
Dynamics of soil organic matter and total nitrogen
estimation of the total nitrogen
Rate constant of mineralization Study on the Spatial Variability of Soil Total Nitrogen in
Ratio of total nitrogen to nicotine
Soil organic carbon and total nitrogen
Soil total nitrogen
微生物氮
土壤全氮含量
土壤全氮
土壤总供氮量
土壤总氮
全氮
soil total nitrogen and total phosphorus
soil total nitrogen STN
the recovery ratio of total nitrogen
TN Total Nitrogen and TP Total Phosphorus
total nitrogen
总氮化物
氮素总量
总氮量
整体氮化
氮的总量
总氮含量
全氮量
氮含量
植株全氮
总氮(TN)
总氮TN
土壤全氮
土壤全氮含量
总氮
全氮
总磷
total nitrogen and total phosphorous
total nitrogen content of flue cured tobacco