覆膜与施氮互作对高粱产量及水氮利用效率的影响

梁晓红,张瑞栋,黄敏佳,刘静,曹雄

Interaction of Film Mulching and Nitrogen Application on Yield, Water and Nitrogen Use Efficiency of Sorghum

Xiaohong Liang,Ruidong Zhang,Minjia Huang,Jing Liu,Xiong Cao

表5 生育期不同处理对高粱节水增产效果的影响

Table 5 Effects of different treatments on water saving and yield increased of sorghum in growth stage

品种 Variety 覆盖方式 Mulch method 施氮量 N application 单位产量 Per kilogram of grain 单位耗水量 Per cubicmeter of water consumption 节水量(m3/kg) Water saved 节水率(%) Water saving rate 增产量(kg/m3) Yield increased 增产率(%) Yield increased rate 2015 2016 2015 2016 2015 2016 2015 2016 A1 B1 C1 - - - - - - - - B2 C1 0.002 0.007 7.153 7.028 2.350 0.716 7.704 7.559 B1 C2 - - - - - - - - B2 C2 0.005 0.009 16.020 8.534 5.927 0.910 19.076 9.330 B1 C3 - - - - - - - - B2 C3 0.003 0.006 9.012 5.701 3.198 0.588 9.904 6.045 A2 B1 C1 - - - - - - - - B2 C1 0.006 0.015 13.046 13.147 3.518 1.328 15.003 15.137 B1 C2 - - - - - - - - B2 C2 0.001 0.014 27.686 13.358 8.782 1.462 38.286 15.417 B1 C3 - - - - - - - - B2 C3 0.004 0.018 8.646 16.952 2.181 1.892 9.465 20.417