It showed that in this fertilizer using amount. One kilogram nitrogen (N) and phosphorous (P_2O_5) can increase corn 15.8Kg and obtain profit RMB 39.97 yuan/acre.

• 通过增产效益分析得出；在这个施肥量下；每公斤氮磷纯养分增产玉米15.；8公斤；可获利润39