河南农业科学 ›› 2020, Vol. 49 ›› Issue (4): 29-37.DOI: 10.15933/j.cnki.1004-3268.2020.04.005

• 作物栽培·遗传育种 • 上一篇    下一篇

不同玉米品种灌浆期穗位叶光合特性日变化及青贮产量差异研究

白岚方1,2,路战远1,2,张向前3,贾凯1,2,王玉芬1,2,孙鸿举1,2   

  1. (1.内蒙古大学 生命科学学院,内蒙古 呼和浩特010070;2.牧草与特色作物生物技术教育部重点实验室,内蒙古 呼和浩特010070; 3.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031)
  • 收稿日期:2019-09-24 出版日期:2020-04-15 发布日期:2020-04-15
  • 通讯作者: 路战远(1964-),男,内蒙古赤峰人,研究员,博士,主要从事保护性耕作和农田生态治理的研究。E-mail:lzhy281@163.com 王玉芬(1963-),女,内蒙古呼和浩特人,副教授,硕士,主要从事作物栽培研究。E-mail:fenwy300@163.com
  • 作者简介:白岚方(1992-),女,山西吕梁人,在读博士研究生,研究方向:作物栽培与耕作学。E-mail:1016794601@qq.com
  • 基金资助:
    国家重点研发计划项目(2016YFD0300309-1);内蒙古自治区自然科学基金项目(2018MSO3073);内蒙古自治区科技创新引导项目(KCBJ2018056)

Diurnal Variation of Photosynthetic Characteristics of Panicle Position Leaf during Filling Period and Difference of Silage Yield of Different Maize Varieties

BAI Lanfang1,2,LU Zhanyuan1,2,ZHANG Xiangqian3,JIA Kai1,2,WANG Yufen1,2,SUN Hongju1,2   

  1. (1.College of Life Science,Inner Mongolia University,Hohhot 010070,China; 2.Key Laboratory of Herbage and Endemic Crop Biotechnology,Ministry of Education,Hohhot 010070,China;3.Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China)
  • Received:2019-09-24 Published:2020-04-15 Online:2020-04-15

摘要: 分析先玉335、利禾1号、东裕120、京科青贮301、金创998、种星青饲1号共6个玉米品种灌浆期穗位叶的光合特性日变化、光响应曲线以及青贮饲草产量、品质的差异,旨为呼和浩特地区青贮玉米高产高效栽培以及品种选择提供依据。结果表明,除利禾1号灌浆期穗位叶的净光合速率日变化呈单峰曲线变化趋势外,其他5个玉米品种均呈双峰曲线变化趋势;各品种气孔导度日变化均呈双峰曲线变化趋势,胞间CO2浓度日变化呈广口“V”字形变化趋势;不同玉米品种间的光响应曲线拟合较好(P<0.05),且种星青饲1号模拟的最大净光合速率[34.97 μmol/(m2·s)]较其他品种高3.70%~31.11%。种星青饲1号的青贮饲草鲜质量最高,为60 601.53 kg/hm2,其次是利禾1号。各品种青贮品质优良。通过综合分析得出,种星青饲1号和利禾1号适合在呼和浩特地区青贮种植。

关键词:

Abstract: Analysis of diurnal changes in photosynthetic characteristics,light response curves of panicle position leaf and silage forage yield,quality of Xianyu 335,Lihe 1,Dongyu 120,Jingke silage 301,Jinchuang 998 and Zhongxing silage 1,will provide a basis for high-yield and efficient cultivation of silage corn and selection of varieties in Hohhot.The results showed that except the daily photosynthetic rate of Lihe 1 being single-peak curve,the diurnal variation of photosynthetic rate of the other five maize varieties showed a bimodal curve.The diurnal variations of stomatal conductance of all varieties appeared a bimodal
peak.Diurnal variation of intercellular CO2 concentration presented the variation tendency of “V” type.The light response curves of different maize varieties were well fitted (P<0.05).The maximum net photosynthesis rate [34.97 μmol/(m2·s)] of Zhongxing silage 1 was 3.70%—31.11% higher than other varieties by calculation.The forage silage yield of Zhongxing silage 1 was the highest,with the value of 60 601.53 kg/ha,followed by Lihe 1.All kinds of silage had good silage quality.Through comprehensive analysis,it can be seen that Zhongxing silage 1 and Lihe 1 are suitable for cultivation in Hohhot.

Key words: Corn, Variety;Panicle position leaf;Diurnal variation of photosynthesis;Light-response;Silage;Yield;Quality

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