nitrogen and phosphorus nutrients

Absorption of nitrogen and phosphorus

Application rate of nitrogen and phosphorus fertilizer

balance analysis of nitrogen and phosphorus

balance of nitrogen and phosphorus

biological removal of nitrogen and phosphorus

characteristics of nitrogen and phosphorus

Combined application of nitrogen and phosphorus

Content of nitrogen and phosphorus

contents of nitrogen and phosphorus

curve of nitrogen and phosphorus

cycling characteristic of nitrogen and phosphorus

demanding volume of nitrogen and phosphorus

dissolution of nitrogen and phosphorus

emission of nitrogen and phosphorus

excretion of nitrogen and phosphorus

Lloss of nitrogen and phosphorus

load of nitrogen and phosphorus

Loading capacity estimation of nitrogen and phosphorus