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作 者 ：梁书荣,赵会杰*,李洪岐,王俊忠,王林华,曲小菲,吕淑敏

期 刊 ：生态学报 2010年 30卷 7期 页码：1927~1931

关键词：夏玉米；密度；种植方式；品种；群体发育特征；产量；

Keywords:summer maize, planting density, planting mode, variety, population developmental characteristics, yield,

摘 要 ：在豫北高产灌区的生产条件下，以郑单958和浚单20为试验材料，研究了不同密度和种植方式对夏玉米群体发育特征的影响。结果表明：密度和种植方式对两个品种的株高、茎粗、穗位、叶面积指数（LAI）、叶绿素含量、干物质积累量、穗部性状、籽粒产量和经济系数的影响达到极显著水平。郑单958在宽窄行种植方式和90000株/hm2的密度下产量最高，达到14236.97kg/hm2,浚单20在宽窄行种植方式和82500株/hm2的密度下产量最高，达到13333.51 kg/hm2。

Abstract:Effects of planting densities and modes on developmental characteristics of summer maize populations were studied in two varieties (Zhengdan 958 and Xundan 20) under high yield condition in Northern Henan Province. The results showed that plant height, stem diameter, height of ear position, leaf area index, chlorophyll content in leaves, biomass of shoots, characteristics of ear, grain yield and harvesting index were significantly influenced by planting density and mode. The yield of Zhengdan 958 was the highest (14236.97 kg/hm2) at a density of 90000 plants per hm2 in wide\|narrow row planting mode, while the yield of Xundan 20 was the highest (13333.51 kg/hm2) at a density of 82500 plants per hm2 in wide\|narrow row planting mode.

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