[1]李亚藏,梁彦兰,王庆成. 铅对山梨和山荆子光合作用和叶绿素荧光特性的影响[J].西北林学院学报,2012,27(05):21-25.
　LI Ya-cang,LIANG Yan-lan,WANG Qing-cheng. Influence of Pb on Photosynthesis and Chlorophyll Fluorescence Characteristics in Pyrus ussuriensis and Malus baccata [J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(05):21-25.
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 铅对山梨和山荆子光合作用和叶绿素荧光特性的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第27卷
期数:
2012年05期
页码:
21-25
栏目:
出版日期:
2012-09-20

文章信息/Info

Title:
 Influence of Pb on Photosynthesis and Chlorophyll Fluorescence Characteristics in Pyrus ussuriensis and Malus baccata 
文章编号:
1001-7461(2012)05-0021-05
作者:
 李亚藏; 梁彦兰; 王庆成
 (1.安阳工学院，河南 安阳 455000；2.东北林业大学，黑龙江 哈尔滨 150040)
Author(s):
 LI Ya-cang; LIANG Yan-lan; WANG Qing-cheng
 (1.Anyang Institute of Technology，Anyang，He’nan 455000，China；2.Nortbeast Forestry University，Harbin, Heilongjiang 150040，China)
关键词:
 ; 山梨; 山荆子; 铅; 光合作用; 叶绿素荧光
Keywords:
 ; Pyrus ussuriensis; Malus baccata;  Pb;  photosynthesis; chlorophyl1 fluorescence
分类号:
S718.43
文献标志码:
A
摘要:
 以北方阔叶树种山梨(Pyrus ussuriensis)和山荆子(Malus baccata)1年生苗木为材料，采用土壤和风化砂混合物作为盆栽基质，设置 0(CK)、100、500、1 000、2 000 mg·kg-15种土壤铅浓度，研究了土壤铅胁迫对苗木叶片光合作用和叶绿素荧光特性的影响。结果表明：随着土壤铅胁迫浓度增加，山梨的净光合速率(Pn)持续下降，气孔导度 (Gs) 先升后降、胞间二氧化碳浓度(Ci)和蒸腾速率(Tr)持续升高；同时山荆子的Pn和Gs先升后降，Ci在100 mg·kg-1出现谷值，随后逐渐升高，Tr持续升高；随土壤铅处理浓度的增加，山梨的Fv/Fm、Fv/Fo和qN逐渐增加，山荆子逐渐下降，qP和ФPSⅡ二者均表现为先升后降。研究发现，铅污染胁迫导致的Pn的下降是由非气孔限制因素所致；铅污染对山梨叶绿素荧光特性起促进作用，对山荆子影响不显著（p<0.05）；综合各项参数山梨对土壤铅的耐性>山荆子。

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