欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (21): 47-50.doi: 10.11924/j.issn.1000-6850.2012-4151

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

江淮旱地玉米氮肥适宜用量研究

王世济 韩坤龙 李强 陈洪俭   

  • 收稿日期:2012-12-25 修回日期:2013-02-02 出版日期:2013-07-25 发布日期:2013-07-25
  • 基金资助:
    “优质高产玉米新品种的选育及产业化”（11010301026）、“江淮中低产田玉米持续增产关键技术研究”（12A0908）、“安徽省玉米振兴计划支撑技术研究”、“安徽省玉米产业技术体系”

The Optimum Amount of Nitrogen Fertilizer of Maize in Jianghuai Area

  • Received:2012-12-25 Revised:2013-02-02 Online:2013-07-25 Published:2013-07-25

PDF (PC)

523

摘要： 为了解施氮量对玉米产量的影响，以‘隆平206’为材料，采用不同的施氮水平处理玉米植株，研究施氮量对玉米产量、穗粒数、千粒重、干物质积累量、收获指数、产出投入比和氮农学效率的影响。结果表明，0 kg/hm2、75 kg/hm2、150 kg/hm2、225 kg/hm2、300 kg/hm2、375 kg/hm2施氮量下玉米产量差异显著，在0~375 kg/hm2施氮量范围内，在0~225 kg/hm2施氮量阶段，玉米的产量随着施氮量的增加而显著增加，0、75、150、225 kg/hm2施氮量水平下的玉米产量分别为7354.0、9462.5、10847.3、11352.6 kg/km2；施氮量超过225 kg/hm2后，增施氮肥对玉米产量增加影响不显著。施氮量与玉米产量存在线性加平台关系，氮肥用量和玉米产量数学模拟方程为y=23.37x+7475，x<169；y=11426，x>169(R2=0.97**，n=18)，江淮旱地的推荐施氮量为169 kg/hm2。该研究为江淮地区玉米生产的合理施氮提供了一定的理论参考依据。

关键词: 生产性能, 生产性能

Abstract: In order to investigate the effect of different amount of nitrogen (N) fertilizer on maize, the yield, grains per ear, 1000-grain weight, dry weight, harvest index, the ratio of return on invested, and agronomic N efficiency of corn hybrid ‘Longping 206’ (Zea mays L.) were analyzed. Results showed that, the yield of maize was significant different under different amount of N (0, 75, 150, 225, 300, 375 kg/hm2). The yield of maize increased with the augment of N from 0 kg/hm2to 225 kg/hm2. In details, when the plants was applied with 0 kg/hm2, 75 kg/hm2, 150 kg/hm2 and 225 kg/hm2, the yield were 7354.0, 9462.5, 10847.3, 11352.6 kg/km2, respectively. However, in contrast to 225 kg/hm2 N, there was no significant increase in yield when the plants were applied with 300 kg/hm2 and 375 kg/hm2. So, the relationship between nitrogen and yield were linear plus plateau. And the mathematical simulation equation was: y=23.37x+7475, x<169; y=11426, x>169 (R2=0.97**, n=18). Accordingly, the optimum amount of N in Jianghuai area was 169 kg/hm2, which layed a theoretic foundation for reasonable use of nitrogen for maize production in Jianghuai area.