宁夏引黄灌区春小麦氮磷钾需求及化肥减施潜力

王西娜,于金铭,谭军利,张佳群,魏照清,王朝辉

Requirement of Nitrogen, Phosphorus and Potassium and Potential of Reducing Fertilizer Application of Spring Wheat in Yellow River Irrigation Area of Ningxia

WANG XiNa,YU JinMing,TAN JunLi,ZHANG JiaQun,WEI ZhaoQing,WANG ZhaoHui

表1 试验处理及其施肥量

Table 1 Experimental treatments and fertilization amount

试验名称 Experiment 处理名称 Treatment 施肥量Fertilization amount (kg·hm-2) N P2O5 K2O 氮肥用量试验 N rate experiment N0 0 120 75 N1 60 120 75 N2 120 120 75 N3 180 120 75 N4 240 120 75 磷肥用量试验 P2O5 rate experiment P0 240 0 75 P1 240 48 75 P2 240 96 75 P3 240 120 75 钾肥用量试验 K2O rate experiment K0 240 120 0 K1 240 120 30 K2 240 120 60 K3 240 120 75