华北农学报 ›› 2011, Vol. 26 ›› Issue (2): 218-222. doi: 10.7668/hbnxb.2011.02.045

• 论文 • 上一篇    下一篇

华北高寒区北沙参光合特性研究

张静1,2, 唐继军1,2, 王岩1,2, 刘玉华1,2, 李旭光3   

  1. 1. 河北农业大学农学院, 河北保定, 071000;
    2. 农业部张北农业资源与生态环境重点野外观测试验站, 河北张家口, 076450;
    3. 河北省土壤肥料总站, 河北石家庄, 050021
  • 收稿日期:2010-12-07 出版日期:2011-04-28
  • 作者简介:张静(1984-),女,河北石家庄人,在读硕士,主要从事农业生态与农作制度研究.
  • 基金资助:
    国家"十一五"科技支撑计划(2006BAD15B05-1);河北省科学技术研究与发展计划项目(06220901D)

The Photosynthetic Characteristics of Glehnia littoralis in the Northwest of Hebei

ZHANG Jing1,2, TANG Ji-jun1,2, WANG Yan1,2, LIU Yu-hua1,2, LI Xu-guang3   

  1. 1. College of Agronomy, Agricultural university of Hebei, Baoding 071001, China;
    2. ZhangbeiAgricultural Resource and Ecological Environment Key Field Research Station, Ministry of Agriculture, Zhangjiakou 076450, China;
    3. Station of Soil and Fertilizer of Hebei, Shijiazhuang 050021, China
  • Received:2010-12-07 Published:2011-04-28

摘要: 为了探讨华北高寒区北沙参光合生理特性,为区域北沙参栽培管理提供技术依据,采用ECA-PB0402光合作用测定仪的闭路系统和pocket PEA植物效率分析仪对北沙参的光合特性和荧光参数进行了研究.结果表明,夏季在晴天、土壤水肥充足条件下,华北高寒区北沙参日变化曲线呈双峰型,峰值出现在10:00和16:00.净光合速率最大值出现在10:00左右,此时的光饱和点LSP为2 070.0 μmol⁄(m2·s),光补偿点LCP为181.2 μmol⁄(m2·s),表观量子效率AQY是0.0781,晴天北沙参叶片的PSⅡ最大光化学效率Fv⁄Fm由10:00的0.83下降到14:00的0.1,比最大值下降约39%.表明在自然晴天条件下,华北高寒区北沙参出现光合"午休"现象,在中午发生了一定的光抑制,属于典型的阳性植物,对光照的适应性较强,高光强的生态环境适宜种植北沙参.

关键词: 华北高寒区, 北沙参, 净光合速率, 有效辐射, 叶绿素荧光参数

Abstract: A field experiment was conducted in Alpine area of North China to study the photosynthetic characteristics with Glehnia littoralis,and ECA-PB0402 photosynthesis closed system and pocket PEA were used in the study. The results showed that:Glehnia littoralis Pn showed a two peaks curve.when the soil with adequate moisture and fertilizer on summer sunny days,peak in 10:00 and 16:00.The net photosynthesis rate appear in 10:00,the light saturatio point was 2 070.0 p,moL/(m2·s),The light compensation point was 181.2 ILLmol/(m2·s),AQY decreases Was 0.078 1,the maximum PSII photochemical efficiency(Fv/Fm)of Glehnia littoralis leaf was declined to about 0.51 at 1400 in sunny days.declined about 39%compared to the maximum value.The conclusion is that under tlIe natural sunny conditions Glehnia littoralis showed a photosynthesis rest in midday and occurred some photoinhibition at noon, it is a typical positive plant,adaptability of sunlight,Better light conditions of the land should be selected,to increase the production of Glehnia littoralis.

Key words: Alpine area of North China, Glehnia littoralis, Photosynthetic rate Photosynthetically active radiation, Chlorophyll fluorescence parameter

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引用本文

张静, 唐继军, 王岩, 刘玉华, 李旭光. 华北高寒区北沙参光合特性研究[J]. 华北农学报, 2011, 26(2): 218-222. doi: 10.7668/hbnxb.2011.02.045.

ZHANG Jing, TANG Ji-jun, WANG Yan, LIU Yu-hua, LI Xu-guang. The Photosynthetic Characteristics of Glehnia littoralis in the Northwest of Hebei[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(2): 218-222. doi: 10.7668/hbnxb.2011.02.045.

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