遮荫对天女木兰光合特性及生长的影响

林业资源管理 ›› 2009›› Issue (3): 61-65.

遮荫对天女木兰光合特性及生长的影响

丁磊¹, 胡万良¹, 王伟¹, 刘政德², 李国升¹, 姚荣升¹, 张玉朋¹, 王刚¹

1.辽宁省森林经营研究所,辽宁丹东 118002;
2.本溪满族自治县偏岭镇林业站,辽宁本溪 117119

收稿日期:2008-12-26 修回日期:2009-06-12 出版日期:2009-06-28 发布日期:2020-12-16
作者简介:丁磊(1981-),男,辽宁本溪人,助理工程师,学士,主要从事森林培育方面的研究。
基金资助:
辽宁省重大科技攻关项目(2006207002)

Effects of Shading on the Photosynthetic Characteristics and Growth of Magnolia sieboldii

DING Lei¹, HU Wanliang¹, WANG Wei¹, LIU Zhengde², LI Guosheng¹, YAO Rongsheng¹, ZHANG Yupeng¹, WANG Gang¹

1. Liaoning Provincial Institute of Forest Management, Dandong 118002, Liaoning Province, China;
2. Pianling Forestry Station of Benxi Manchu Autonomous County, Benxi 117119, Liaoning Province, China

Received:2008-12-26 Revised:2009-06-12 Online:2009-06-28 Published:2020-12-16

摘要/Abstract

摘要： 研究不同程度的遮荫(A:0,B:25.8%,C:61.3%,D:90.3%)对天女木兰光合特性及生长的影响。结果表明:天女木兰的地径、苗高和生物量均表现为B>A>C>D。天女木兰的光补偿点和光饱和点均较低,且随着遮荫程度的提高,其值以及暗呼吸速率均依次降低。天女木兰净光合速率日变化规律在不同的遮荫处理下均呈现双峰型曲线,有明显的光合“午休”现象,净光合速率日最大值为B>A>C>D。B处理是这4种遮荫处理中天女木兰生长最适宜的遮荫强度,适度遮荫可增强天女木兰叶片的光合作用,促进其生长。

关键词: 天女木兰, 遮荫, 光合特性

Abstract: The effects of different shading treatments(A:0, B:25.8%, C:61.3%, D:90.3%)on the photosynthetic characteristics and growth ofMagnolia sieboldii were examined.The results showed that the basal diameter, height and biomass at B treatment were higher than those at other shading treatments.The light compensation point(LCP), light saturation point(LSP) and dark respiration rate(DP)of the Magnolia sieboldii were at a low level, the value of which decreased with the increasing of shading degree.The daily variation of netphotosynthetic presented a bimodal curve under four shading treatments.The netphotosynthetic rate was B>A>C>D.It is obvious that B treatment can provide the most suitable condition for Magnolia sieboldii among four shading treatments.So we can conclude that moderate shading could increase the leaf photosynthesis and plant growth of Magnolia sieboldii.

Key words: Magnolia sieboldii, shading, photosynthetic characteristics

中图分类号:

Q945

丁磊, 胡万良, 王伟, 刘政德, 李国升, 姚荣升, 张玉朋, 王刚. 遮荫对天女木兰光合特性及生长的影响[J]. 林业资源管理, 2009,(3): 61-65.

DING Lei, HU Wanliang, WANG Wei, LIU Zhengde, LI Guosheng, YAO Rongsheng, ZHANG Yupeng, WANG Gang. Effects of Shading on the Photosynthetic Characteristics and Growth of Magnolia sieboldii[J]. FOREST RESOURCES WANAGEMENT, 2009,(3): 61-65.

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