北方农业学报 ›› 2019, Vol. 47 ›› Issue (4): 57-60.doi: 10.3969/j.issn.2096-1197.2019.04.10

• 作物栽培·土壤肥料·节水灌溉 • 上一篇    下一篇

不同施氮量对玉米干物质积累的影响

侯峰   

  1. 山西省农业科学院旱地农业研究中心,山西 太原 030031
  • 收稿日期:2019-05-30 出版日期:2019-08-20 发布日期:2019-12-10
  • 作者简介:侯峰(1968—),男,助理研究员,学士,主要从事旱地玉米种植、旱地甘蓝种植、旱地艺机一体化(农艺与农机结合)、旱地杂豆种植的研究工作。

Effects on dry matter accumulation at different nitrogen application rates of maize

HOU Feng   

  1. Dryland Agriculture Research Center, Shanxi Academy of Agricultural Sciences,Taiyuan 030031,China
  • Received:2019-05-30 Online:2019-08-20 Published:2019-12-10

摘要: 为科学合理选择适合黑龙江垦区的玉米施氮量,试验在田间条件下,设置N1(0)、N2(90 kg/hm2)、N3(120 kg/hm2)、N4(150 kg/hm2)4个施氮处理,研究了玉米各器官干物质积累量变化。结果表明:叶片干物质积累量灌浆期至成熟期表现为随着氮肥施用量的增加而升高,N4与对照差异显著;与对照相比,增加氮肥施用量提高了茎干物质量,N3、N4均显著高于对照;N3在灌浆期显著提高了苞叶、雌穗干物质积累量,N3、N4均显著提高了孕穗期、成熟期苞叶和雌穗干物质积累;N4总干物质积累量显著高于对照和N2、N3处理。综合分析认为,N4对促进玉米干物质积累量增加效果最佳。

关键词: 氮肥, 玉米, 干物质积累

Abstract: This study analyzed the changes of dry matter accumulation in different organs of maize under field conditions,using 4 treatments of N1 (0),N2 (90 kg/hm2),N3 (120 kg/hm2),and N4 (150 kg/hm2).The results showed that dry matter accumulation of leaves increased proportionally with the nitrogen fertilizer application from the grouting stage to the maturation stage,and there was a significant difference between N4 and control.Compared with to the control group,increasing the nitrogen application rate improved the stem matter quality,of which N3 and N4 were significantly higher than control.In the filling stage,N3 significantly increased the dry matter accumulation of bract and female ear,and both N3 and N4 significantly increased the dry matter accumulation of bract and female ear at the booting stage and the maturation stage.The total dry matter accumulation of N4 was significantly higher than control,N2 and N3.The comprehensive analysis showed that N4 had the best effect on increasing the dry matter accumulation of maize.

Key words: Nitrogen fertilizer, Maize, Dry matter accumulation

中图分类号: 

  • S513