Amount of nitrogen application
date of nitrogen application
Deferred nitrogen application
Delayed-nitrogen application
different nitrogen application amount
different nitrogen application rates
interactions of water management and nitrogen application
Irrigation and nitrogen application
level of nitrogen application
levels of nitrogen application
Mode of nitrogen application
Nitrogen application
N肥用量
供氮水平
氮素运筹
氮肥施用
氮肥用量
氮肥处理
氮肥
氮素
运筹
施氮量
氮肥运筹
氮素用量
施氮
氮肥水平
施肥量
施氮水平
nitrogen application amount
Nitrogen application at rice seedling period
nitrogen application combined with potassium
nitrogen application effect
Nitrogen application for grain filling
nitrogen application level
nitrogen application levels