湖北农业科学 ›› 2018, Vol. 57 ›› Issue (10): 21-23.doi: 10.14088/j.cnki.issn0439-8114.2018.10.005

• 育种·栽培 • 上一篇    下一篇

种植密度对武陵山区夏玉米生长和产量的影响

易永1,2, 李民华1,2, 姚秋云1,2, 黄晚华1   

  1. 1.气象防灾减灾湖南省重点实验室,长沙 410000;
    2.怀化市气象局,湖南 怀化 418000
  • 收稿日期:2018-03-06 出版日期:2018-05-25 发布日期:2019-12-19
  • 作者简介:易 永(1982-),男,湖南隆回人,高级工程师,主要从事农业气象研究,(电话)18774553753(电子信箱)easyease@163.com
  • 基金资助:
    国家“十三五”重点研发计划项目(2016YFD0300101-05)

Influence of Planting Density on the Growth and Yield of Summer Maize in Wuling Mountain Area

YI Yong1,2, LI Ming-hua1,2, YAO Qiu-yun1,2, HUANG Wan-hua1   

  1. 1.Key Laboratory of Hunan Meteorological Disaster Prevention and Reduction,Changsha 410000,China;
    2.Huaihua Meteorological Bureau,Huaihua 418000,Hunan,China
  • Received:2018-03-06 Online:2018-05-25 Published:2019-12-19

摘要: 为了研究种植密度对武陵山区夏玉米生长和产量的影响,设置5.14万株/hm2(现有正常密度)、5.98万株/hm2、6.55万株/hm2、7.08万株/hm2 4个田间密度进行了试验。结果表明,各种植密度生育进程基本相同,群体干物质增长速度具有低密度前慢后快和高密度前快后慢的特点,各种植密度群体最终总生物量差别不大。种植密度和产量呈抛物线变化趋势,通过种植密度的增加,以促使群体生物量转化为产量,试验中设置的3个较高密度较正常密度增产8%~14%,以种植密度6.55万株/hm2产量最高。

关键词: 夏玉米, 种植密度, 生长发育, 产量, 武陵山区

Abstract: In order to study the effect of planting density on the growth and yield of summer maize in Wuling mountain area,4 field density tests were carried out by setting 4 densities of 51 400 plants/hm; 2(normal density),59 800 plants/hm; 2,65 500 plants/hm; 2,70 800 plants/hm; 2. The results showed that the growth processes of different density were basically the same. The colony dry matter of lower density increased relative slowly in early stage and fast in later period, and the colony dry matter of higher density showed opposite trend. The final total biomass of each density had no significant difference. Density and yield showed a parabolic trend. The increase of sinks was beneficial to the transformation of population biomass into yield. The yield of three higher density treatments in the experiment were 8%~14% higher than the normal density. The yield with the density of 65 500 plants/hm; 2 was the highest.

Key words: summer maize, planting density, growth and development, yield, Wuling mountain area

中图分类号: