典型黑土春玉米化学肥料养分利用效率变化研究

仇少君,李宁,何萍,魏丹,金梁,赵士诚,徐新朋,周卫

Nutrients Use Efficiency Change of Chemical Fertilizers for Spring Maize in a Typical Black Soil

Ning LI,Ping HE,Wei ZHOU,Dan WEI,Liang JIN,ShiCheng ZHAO,XinPeng XU,ShaoJun QIU

表1 2013—2016年不同处理春玉米产量和收获指数

Table 1 Yield and harvest index of spring maize under different treatments from 2013 to 2016

处理 Treatment 产量Yield (t·hm-2) 收获指数Harvest index 2013 2014 2015 2016 平均 Average 2013 2014 2015 2016 平均 Average CK 8.4a 5.0c 4.9b 5.0b 5.8b 0.51a 0.50a 0.44b 0.45b 0.47b PK 8.8a 5.1c 5.4b 5.5b 6.2b 0.54a 0.44b 0.43b 0.44b 0.46b NK 8.5a 8.9b 9.7a 11.4a 9.6a 0.53a 0.53a 0.51a 0.53a 0.52a NP 8.5a 9.4ab 10.0a 11.0a 9.7a 0.52a 0.51a 0.51a 0.51a 0.51a NPK 8.3a 10.1a 10.7a 11.9a 10.2a 0.53a 0.52a 0.51a 0.52a 0.52a