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当前位置: 首页 > 文章 > 美国黄松、奥地利黑松和油松光合、蒸腾及生长特性分析 西北林学院学报 2002,17 (3) 1-4
Position: Home > Articles > Photosynthesis, Transpiration and Growth Features of Pinus ponderosa, P. nigra var. austriaca and P. tabulaeformis Journal of Northwest Forestry University 2002,17 (3) 1-4

美国黄松、奥地利黑松和油松光合、蒸腾及生长特性分析

作  者：
刘建军;王得祥;雷瑞德;崔宏安;王翼龙
单  位：
西北农林科技大学林学院
关键词：
美国黄松;奥地利黑松;光合速率;蒸腾强度;生长过程
摘  要：
通过对黄土丘陵沟壑区引种栽培的美国黄松、奥地利黑松和地带性树种油松的光响应曲线、光合速率、蒸腾速率、气孔导度等生理特性以及树高生长过程进行测定和对比分析 ,结果表明 :美国黄松的光合速率、蒸腾速率均明显高于奥地利黑松和油松 ,在光饱和点 ,3个树种的光合速率 ( CO2 )分别为 1 2 2 .1 5 3、1 1 1 .786和 62 .5 5 0μmol· g-1· s-1;3个树种光合作用的日进程都存在“午休现象”;美国黄松、奥地利黑松的胸径和材积生长速度大于油松 ,因此 ,就生长特点和目前表现而言 ,美国黄松、奥地利黑松在黄土高原丘陵沟壑区表现良好 ,可以在本区域扩大引种推广范围
译  名：
Photosynthesis, Transpiration and Growth Features of Pinus ponderosa, P. nigra var. austriaca and P. tabulaeformis
作  者：
LIU Jian jun, WANG De xiang, LEI Rui de, CUI Hong an, WANG Yi long (College of Forestry, NW Sci Tech Univ. of Agr. and For., Yangling, Shaanxi, 712100, China)
关键词：
Pinus ponderosa; P. nigra var. austriaca ; photosynthetic rate; transpiration; growth process
摘  要：
Light curve, photosynthetic rate, transpiration, stoma conduct of Pinus ponderosa,P. nigra var. austriaca and P. tabulaeformis were measured using Licor 6400 portable photosynthesis system, and also height growth process were analyzed in this paper. The results show that photosynthetic rate and transpiration of P. ponderosa were higher than those of P. nigra var. austriaca and P. tabulaeformis ; photosynthetic rate of P. ponderosa, P. nigra var. austriaca and P. tabulaeformis at the light saturation point(CO 2) were about 122.153 μmol·g -1 ·s -1 ,111.786 μmol·g -1 ·s -1 and 62.550 μmol·g -1 ·s -1 respectively; there was "noon break phenomenon" in the diurnal variation of photosynthetic rate for 3 tree species. As the volume and diameter growth of Pinus ponderosa , P. nigra var. austriaca introduced from aboard have obvious advantages than P. tabulaeformis , they can be cultivated and popularized in more expend areas according to their growth features and presently appearances.

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