摘要： 通过对京郊5个夏播玉米品种氮肥效应研究，明确了各个品种对化肥的敏感程度。结果表明，目前大面积种植的唐抗5号是一个对化肥不敏感型品种，在中低肥力水平上稳产性能较好，但在高肥力条件下，获得更高的产量却比较困难。为了获得玉米的高产高效率，选用对化肥比较敏感的品种较为适宜，对京郊现有的夏播玉米品种进行更新换代势在必行通过对京郊5个夏播玉米品种氮肥效应研究，明确了各个品种对化肥的敏感程度。结果表明，目前大面积种植的唐抗5号是一个对化肥不敏感型品种，在中低肥力水平上稳产性能较好，但在高肥力条件下，获得更高的产量却比较困难。为了获得玉米的高产高效率，选用对化肥比较敏感的品种较为适宜，对京郊现有的夏播玉米品种进行更新换代势在必行。

关键词: 玉米, 品种, 化肥效应玉米, 化肥效应

Abstract: The sensitivity of different maize genotypes to the nitrogen fertilizer was determined through the study of effects of the fertilizer on summer maize in Beijing suburbs.The widely planted Tangkang 5 is not sensitive to chemical fertilizers.It has stable yield under medium to lower levels of fertilizer application and failed to gain yield increase at highs levels of fertilizer application.To get high yield and efficiency of maize,fertilizer-sensitive varieties should be adopted in the futrue.

Key words: Maize, Genotype, Effects of nitrogen fertilizer

中图分类号: 

• S513.062