油松光合特性的研究  

Photosynthetic Characterristics of Pinus tabulaeformis

作　　者：曹军胜[1,2] 刘广全[1,3] 

机构地区：[1]西北农林科技大学生命学院 [2]延安大学生命学院,陕西延安716000 [3]国际泥沙研究培训中心,北京100044

出　　处：《安徽农业科学》2005年第4期608-609,718,共3页Journal of Anhui Agricultural Sciences

基　　金：国家"十五"科技攻关项目(2001BA510B0103);水利部"948"项目(200207);水科院专项(资集03KY03)资助。

摘　　要：通过对黄土高原常用造林树木油松的光响应曲线、ACI曲线、光合速率、气孔导度等生理特性进行测定和对比分析,结果表明:油松树种的光饱和点为750.9μmol/(m·2s),该树种在光饱和点的光合速率为5.7μmol(CO2)/(m·2s)。油松光合日进程呈单峰曲线,在一定CO2范围内,光合速率与CO2浓度呈正相关。Light curve,ACI curve ,photosynthetic rate of Pinus tabulaeformis were measured with LICOR-6400 portable photosynthesis system. The results indicated that photosynthetic rate and transpiration of Pinus tabulaeformis were not higher, at the light saturation point (CO2) were about 5.7 μmol(CO2)/(m2·s) . The photosynthetic rate and CO2 concentration appeared positive correlation.

关 键 词：油松 光合作用 

分 类 号：S791.254[农业科学—林木遗传育种]