Apparent nitrogen recovery rate
ammonia nitrogen recovery
Apparent nitrogen recovery percentage
fertilizing nitrogen rate
Nitrogen rate
氮肥用量
氮用量
氮肥水平
氮素形态
氮素水平
施氮量
施用量
施氮水平
氮肥
地力水平
nitrogen recovery efficiency
rate nitrogen fertilization
the optimal fertilization of nitrogen rate
clean coal recovery rate
elasticity recovery rate
Erythrocyte recovery rate
fertilizer recovery rate