华北农学报 ›› 2015, Vol. 30 ›› Issue (3): 117-122. doi: 10.7668/hbnxb.2015.03.021

所属专题: 玉米

• 论文 • 上一篇    下一篇

华北平原夏玉米农田CO2通量与光合特性及主要环境因素的关系

王志强, 王俊哲, 辛泽毓, 曲奕威, 林同保   

  1. 河南农业大学 农学院,河南粮食作物协同创新中心, 河南 郑州 450002
  • 收稿日期:2014-12-26 出版日期:2015-06-28
  • 通讯作者: 林同保(1962-),男,河南武陟人,教授,博士,主要从事作物生理生态研究。
  • 作者简介:王志强(1978-),男,河南辉县人,副教授,博士,主要从事作物生理与农田生态研究。
  • 基金资助:
    公益性行业(农业)科研专项(201203077)

Relationship of Carbon Flux with Photosynthesis Characteristics and Main Environmental Factors in Maize Agri-ecosystem

WANG Zhi-qiang, WANG Jun-zhe, XIN Ze-yu, QU Yi-wei, LIN Tong-bao   

  1. Agronomy College of Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, China
  • Received:2014-12-26 Published:2015-06-28

摘要: 为准确估算夏玉米产量和净生产力,以华北平原典型夏玉米农田为对象,研究了CO2通量(Fc)与玉米光合特性及主要环境因素的关系。结果表明,Fc与群体光合速率(CAP)之间有明显的正相关关系,相关系数达0.910;从日累积量来看,Fc和CAP均在抽雄吐丝期达到最大;将单叶净光合速率(Pn)与叶面积指数(LAI)的乘积(Pn·LAI)和Fc进行曲线拟合,预测值与实测值的相关系数为0.790,达极显著水平;从主要环境因素对Fc的通径分析来看,水蒸汽分压对Fc的决定系数及其所占比重最大,其次是水汽浓度、Pn·LAI、光合有效辐射、CO2浓度,可见蒸腾作用对Fc的耦合效应十分显著。

关键词: 夏玉米, CO2通量, 光合特性, 环境因素

Abstract: In order to estimate the yield and net productivity of summer corn,using eddy tower system,we investigated single-leaf net photosynthesis (Pn) and canopy apparent photosynthesis (CAP) of summer maize in different stages,and studied the relationship of carbon flux with crop photosynthesis and main environmental factors in the maize agri-ecosystem in North China Plain.The results showed that there was a positive correlation between Fc and CAP in maize field,their average correlation coefficient was 0.910.The diurnal accumulation of Fc and CAP reached maximum value in heading stage.We get a curve-equation with the regression analyzing Pn·LAI to Fc,the trendline of equation and real value had a perfect superposition and the correlation-coefficient was significantly 0.790.The Full-Path Analyse of different environment factors to Fc reveal that the decision-coefficient and proportion of the hydrosphere press in atmosphere were maximal,posteriorly H2O concentration,Pn·LAI,photosynthetically active radiation and CO2 concentration.Leaf transpiration have significant coupling-effect to Fc.

Key words: Summer maize, CO2 flux, Photosynthetic characteristics, Environment factors

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引用本文

王志强, 王俊哲, 辛泽毓, 曲奕威, 林同保. 华北平原夏玉米农田CO2通量与光合特性及主要环境因素的关系[J]. 华北农学报, 2015, 30(3): 117-122. doi: 10.7668/hbnxb.2015.03.021.

WANG Zhi-qiang, WANG Jun-zhe, XIN Ze-yu, QU Yi-wei, LIN Tong-bao. Relationship of Carbon Flux with Photosynthesis Characteristics and Main Environmental Factors in Maize Agri-ecosystem[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(3): 117-122. doi: 10.7668/hbnxb.2015.03.021.

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