leaf total nitrogen

leaf total nitrogen concentration

Total leaf nitrogen content TLN

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

Ginkgo biloba leaf total flavonoids

hainan holly leaf total flavonoids

Kjeldahl distillation method for total nitrogen

leaf total biomass

persimmon leaf total flavonoids

Rate constant of mineralization Study on the Spatial Variability of Soil Total Nitrogen in

Ratio of total nitrogen to nicotine

River total nitrogen

scutellaria baicalensis stem-leaf total flavonoid

Scutellaria baicalensis stem-leaf total flavonoids

Soil organic carbon and total nitrogen

Soil total nitrogen