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中国农学通报 ›› 2016, Vol. 32 ›› Issue (36): 45-49.doi: 10.11924/j.issn.1000-6850.casb16030014

所属专题: 玉米

• 农学 农业基础科学 • 上一篇    下一篇

不同密度对玉米‘郑单2098’产量及构成因素的影响

张前进1,鲁晓民1,魏 昕1,李新泽2,田慧鹏3,曹丽茹1,张 新1,王振华1   

  1. (1河南省农业科学院粮食作物研究所,郑州 450002;2西华县农业科学研究所,河南西华 466600;3长葛市农业科学研究所,河南长葛 461506)
  • 收稿日期:2016-03-01 修回日期:2016-04-18 接受日期:2016-05-25 出版日期:2016-12-26 发布日期:2016-12-26
  • 通讯作者: 王振华
  • 基金资助:
    国家玉米产业技术体系项目“玉米遗传育种岗位科学家”(CARS-02-05);国家“863”项目“强优势玉米杂交种的创制与应用”(2011AA10A103)。

Effects of Planting Density on Yield and Its Composition Factors of Maize ‘Zhengdan 2098’

Zhang Qianjin1, Lu Xiaomin1, Wei Xin1, Li Xinzhe 2, Tian Huipeng3, Cao Liru1, Zhang Xin1, Wang Zhenhua1   

  1. (1The Cereal Crops Institute of Henan Academy of Agricultural Sciences, Zhengzhou 450002;2Xihua Institute of Agricultural Sciences Research, Xihua Henan 466000;3Changge Institute of Agricultural Sciences Research, Changge Henan 461506)
  • Received:2016-03-01 Revised:2016-04-18 Accepted:2016-05-25 Online:2016-12-26 Published:2016-12-26

摘要: 为研究密度对玉米‘郑单2098’产量及其构成因素的影响,探讨不同肥力水平下‘郑单2098’的最佳栽培密度。以‘郑单2098’为材料,在河南省西华和长葛两地研究了不同地力、不同密度对‘郑单2098’产量及相关性状的影响。结果表明:随着密度增加,产量先增后减,株高、穗位高、空秆率、秃尖增加,穗长、穗粗、行粒数、双穗率、穗粒重、百粒重减少,出籽率相对稳定;‘郑单2098’在中肥力水平下,随着密度的增加影响产量主要因素是穗行数和秃尖,而在高肥力水平下,随着密度的增加影响产量主要因素是穗粒重和百粒重。‘郑单2098’在中肥力水平下,适宜种植密度为5.25万株/hm2左右;在高肥力水平下适宜种植密度为6.75万株/hm2左右。

关键词: 府河流域, 府河流域, 污灌, 土壤污染, 调查研究

Abstract: In order to explore the effect of planting density on yield and its composition factors, and study the optimum planting density under different fertility levels of ‘Zhengdan 2098’, the experiments were conducted in Xihua and Changge of Henan Province using ‘Zhengdan 2098’ as the material. The results showed that with the density increase, the yield first increased and then decreased, the plant height, ear height, ratio of empty stalk, bald tip all increased, while the ear length, ear diameter, particle number, double spike rate, ear grain weight, 100-grain weight decreased, and the shelling percentage was relatively stable. With the density increase, the number of rows per ear and bald tip were main influence factors on yield of ‘Zhengdan 2098’ under the middle fertility level, and the ear grain weight and 100-grain weight were main influence factors on yield of ‘Zhengdan 2098’ under the high fertility level. The optimum planting density of ‘Zhengdan 2098’ was 52500 plants/hm2 under middle fertility level, and the optimum planting density of ‘Zhengdan 2098’ was 67500 plants/hm2 under high fertility level.

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