天津农学院学报 ›› 2016, Vol. 23 ›› Issue (1): 18-22.

• 研究与简报 • 上一篇    下一篇

种植密度对玉米产量和相关生理特性影响的研究

侯月, 王冲, 王鹏文通信作者   

  1. 天津农学院 农学与资源环境学院,天津 300384
  • 收稿日期:2015-05-21 出版日期:2016-03-20 发布日期:2019-10-14
  • 通讯作者: 王鹏文(1957-),男,辽宁盖州市人,教授,博士,主要从事玉米育种及栽培生理研究。E-mail:pengwenw@sina.com。
  • 作者简介:侯月(1989-),女,天津市人,硕士在读,主要从事玉米育种及栽培生理研究。E-mail:648656521@qq.com。
  • 基金资助:
    天津市高校“作物品质及抗逆性的遗传改良”创新团队资助项目(TD12-5017); 科技部项目“环渤海天津增粮技术集成与示范”(2013BAD05B08)

Study on Effect of Plant Density on Related Photosynthetic Characteristics of Maize

HOU Yue, WANG Chong, WANG Peng-wenCorresponding Author   

  1. College of Agronomy and Resource Environment, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2015-05-21 Online:2016-03-20 Published:2019-10-14

摘要: 以郑单958为试验材料,在2 500~8 500株/667m2的种植密度范围内,研究种植密度对玉米产量和生理特性的影响。结果表明:随种植密度的增加,单株穗位叶的净光合速率和光合有效辐射、蒸腾速率、气孔导度等光合指标均呈降低趋势,从而减弱植株的光合作用,影响单株产量。单株叶面积随种植密度的增加而下降,但群体叶面积指数和群体光合势随密度的增加而增加,即源增加,从而增加群体的同化作用,提高了玉米产量。在本试验条件下,郑单958的产量与种植密度呈二次曲线关系,密度为5 263株/667m2时,获得最高产量为521.8 kg。因此,在本试验条件下,郑单958的密度阈值为5 263 株/667m2

关键词: 玉米, 种植密度, 产量, 生理性状

Abstract: :In 2 500-8 500 plant per 667m2, by using Zhengdan 958, the effect of plant density on related photosynthetic characteristics of maize was studied. The results indicated that: with the increasing of planting density, net photosynthetic rate, photosynthetic active radiation, transpiration rate and stomata conductance showed the decreased trend. The reduction of photosynthesis affect the yield per plant. With the increasing of planting density, leaf area per plant decreased. But with the increasing of planting density, groups leaf area index and photosynthetic intensity increased. The increasing of source improved the collective assimilation, improving maize yield. The yields of dengdan958 and plant density were quadratic curve relationship. When the plant density was 5 263 plant per 667m2, the yield will achieve the highest yield. The highest yield is 521.8 kg. Therefore, in this study, the density threshold of Zhengdan 958 is 5 263 plant per 667m2.

Key words: maize, plant density, yield, photosynthetic characteristics

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