[1]郭春明,李大勇,姚渝丽,等.不同生长状况下玉米叶片的光合特征研究[J].黑龙江农业科学,2016,(10):23-27.[doi:10.11942/j.issn1002-2767.2016.10.0023]
　GUO Chun-ming,LI Da-yong,YAO Yu-li,et al.Study on Photosynthetic Characteristics of Different Growth of Maize Leaves[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(10):23-27.[doi:10.11942/j.issn1002-2767.2016.10.0023]
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不同生长状况下玉米叶片的光合特征研究

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2016年10 页码: 23-27 栏目: 出版日期: 2016-10-10
Title:
Study on Photosynthetic Characteristics of Different Growth of Maize Leaves
文章编号:
1002-2767（2016）10-0023-05
作者:
郭春明1; 李大勇2; 姚渝丽2; 任景全1; 李建平1; 崔金虎3; 耿艳秋2
（1.吉林省气象科学研究所，吉林 长春 130062；2.吉林农业大学 农学院，吉林 长春 130118；3.吉林大学 植物科学学院，吉林 长春 130062）
Author(s):
GUO Chun-ming1; LI Da-yong2; YAO Yu-li2; REN Jing-quan1; LI Jian-ping1; CUI Jin-hu3; GENG Yan-qiu2
(1.Meteorological Science Institute of Jilin Province,Changchun,Jilin 130062; 2.Agronomy Courtyard of Jilin Agricultural University,Changchun,Jilin 130118; 3.College of Plant Science of Jilin University,Changchun,Jilin 130062)
关键词:
玉米; 倒伏; 光合特性; 日变化
Keywords:
corn;  normal growth;  lodging;  photosynthetic characteristics;  diurnal variation
分类号:
S513
DOI:
10.11942/j.issn1002-2767.2016.10.0023
文献标志码:
A
摘要:
为探讨吉林省大风灾害对玉米光合特征的影响，采用LI-6400型光合测定仪，测定正常和倒伏状况下玉米叶片光合特征的日变化。结果表明:正常和倒伏状况下玉米的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)均呈现双峰曲线,具“午休”现象。倒伏玉米净光合速率(Pn)显著低于正常(P<0.05)，降低幅度为66.1%～89.0%，气孔导度(Gs)显著低于正常(P<0.05)，降低幅度为41.4%～74.2%，蒸腾速率Tr显著低于正常(P<0.05)，降低幅度为50.8%～72.5%，水分利用效率（WUE)显著低于正常(P<0.05)，降低幅度为21.7%～60.0%，而倒伏玉米叶片胞间 CO2浓度(Ci)显著高于正常(P<0.05)，增加幅度为23.5%～103.8%。由此可知倒伏明显降低玉米光合生产能力，是玉米高产的限制因子。
Abstract:
In order to discuss the effect of high wind of Jilin on the photosynthetic characteristics of corn,diurnal changes of net photosynthetic rate and relative factors in leaves of corn were measured by LI-6400 portable photosynthesis system.The results showed that the diurnal changes of net photosynthetic rate,stomatal conductance and transpiration rate of normal growth and lodging had respectively a “midday rest” for the dropping 10:30-14:30 and double-peak styles.Compared with the normal growth,net photosynthetic rate decreased dramatically by 66.1%～89.0%(P>0.05),stomatal conductance decreased dramatically by 41.4%～74.2%(P>0.05),transpiration rate decreased dramatically by 66.1%～89.0%(P>0.05),and water use efficiency decreased dramatically by 66.1%～89.0%(P>0.05).However,intercellular CO2 concentration presented highly differenceP<0.05) compared with the control,increased dramatically by 23.5%～103.8%(P>0.05).Thus the lodging significantly reduced the capacity of the corn photosynthetic production and it was a limit factor of the corn yield.

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备注/Memo

收稿日期：2016-08-15

基金项目： 公益性行业（气象）科研专项资助项目（GYHY201206018）
第一作者简介： 郭春明（1962-），男，吉林省公主岭市人,高级工程师，学士，从事农业气象业务和研究工作。E-mail：Gch8188@sina.com。

更新日期/Last Update: 2016-12-15