摘要
研究了氮肥不同施用量对玉米产量的影响,结果表明,氮肥施用量与玉米产量呈二次函数抛物线关系,最佳经济施氮量为259.5 ～ 327.0 kg/hm2,此时玉米产量为8 358～9 714 kg/hm2.
A field experiment was conducted to study the effects of different nitrogen fertilizer application rates on the corn yield. The results show that a quadratic function parabola relationship exists between the application amount of nitrogen fer- tilizer and the corn yield. The best economic application amount of nitrogen fertilizer was 259.5 - 327.0 kg/hm2 and with this the corn yield was 8 358- 9 714 kg/hm2.
出处
《宁夏农林科技》
2013年第11期50-51,67,共3页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
玉米
氮肥
施用量
Corn
Nitrogen fertilizer
Application amount
