摘要
试验表明,不同施氮量对夏玉米的增产效应差异达显著水平。氮肥对夏玉米产量性状的影响,主要表现在千粒重、单株果穗干物质的提高,与穗粒数、秃尖率等相关性较小;本试验夏玉米最高产量的施纯氮量为137.68kg/hm2,经济最佳施肥量为纯氮131.54kg/hm2。
The study on economic application amount of nitrogen in summer corn in the western Henan showed that the different nitrogen applications had same affect on yield increase. The effect of N-fertilizer on 1?000-grain weight and individual dry matter of the yield component of summer corn was obvious, and grains per ear and rate of infertility was smaller.When nitrogen application amount was 137.68?kg per hm 2, the summer corn could achieve the highest yield and the optimum application amount was 131.54kg per hm 2.
出处
《安徽农业科学》
CAS
北大核心
2005年第5期765-766,共2页
Journal of Anhui Agricultural Sciences
关键词
夏玉米
氮肥
经济最佳施氮量
Summer corn
Nitrogen application amount
N-fertilizer
