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典型黑土春玉米化学肥料养分利用效率变化研究
仇少君1,李宁1,何萍1,魏丹2,3,金梁2,赵士诚1,徐新朋1,周卫1
Nutrients Use Efficiency Change of Chemical Fertilizers for Spring Maize in a Typical Black Soil
QIU ShaoJun1, LI Ning1, HE Ping1, WEI Dan2,3, JIN Liang2, ZHAO ShiCheng1, XU XinPeng1, ZHOU Wei1

图3. 2013—2016年间NPK处理氮磷钾养分利用效率

Fig. 3. Nitrogen, phosphor and potassium use efficiency under NPK treatment from 2013 to 2016