摘要
采用裂区设计,以郑单958为试材,研究了不同施氮量与种植密度对夏玉米产量及效益的影响。结果表明,施氮量及密度对夏玉米产量的影响均达到显著水平,且施肥和密度互作效应显著。666.7m2产量629.58 kg,且效益最大的栽培模式是:666.7m2追施氮肥(尿素)30.4 kg,种植密度4 000株。
The effects of different N rates and planting density on yield and benefits of summer maize were studied by split -plot desigh. The results showed that the yield was significantly correlated with N rate and density, and the interaction effect of fertilization and density was obvious. The cultivation mean with the best benefits and yield of 629. 58 kg per 666. 7m^2 was topdressing 30. 4 kg nitrogen and planting 4 000 plants per 666. 7m^2.
出处
《山东农业科学》
2009年第6期48-50,共3页
Shandong Agricultural Sciences
关键词
夏玉米
施肥
密度
产量与效益
Summer maize
Fertilization
Density
Yield and benefit
