大棚黄瓜增施CO_2对光合速率的影响  

EFFECT OF CO 2 ENRICHMENT ON THE PHOTOSYNTHETIC RATE OF THE LEAVES OF CUCUMBER IN PLASTIC HOUSE

作　　者：于国华[1] 宫本堂 何忠诚[1] 于海清 

机构地区：[1]莱阳农学院农学系 [2]文登农业局

出　　处：《莱阳农学院学报》1996年第1期5-10,共6页Journal of Laiyang Agricultural College

摘　　要：研究结果表明，增加ＣＯ２浓度，可显著提高黄瓜叶片的光合速率，在大棚所处的低ＣＯ２条件下，效果更为明显。增施ＣＯ２的黄瓜产量提高３１．５％。施用ＣＯ２的同时，增加光照强度，更有利于ＣＯ２肥效的提高。空气ＣＯ２浓度、细胞间隙ＣＯ２浓度与光合速率是一致的，在高ＣＯ２浓度下，气孔导度一般不是光合速率的限制因子。随着ＣＯ２浓度的增加，黄瓜叶片的呼吸速率略有提高，但与光合产物积累相比。The experimental results showed that the CO 2 enrichment could obviously increase the photosynthetic rate of cucumber leaves in plastic green house, especially in the conditions with low CO 2 content.The measurements of CO 2 enrihcment could increase the cucumber output about 31.5% , if accompanied with the increase of light intensity , the would be efficient effect more. The increase of intercellualr CO 2 concentration and photosynthetic rate was positively correlated with the increase of air CO 2 concentration in plastic green house. The stomatal conductance was not a restrictive factor for photosynthetic rate in high CO 2 conditions. With the increase of CO 2 concentration , the respiratory rate of cucumber leaves. increased slightly.Compared with the accumulation of phyotsynthetic materials. The respiratory consumption was a little

关 键 词：黄瓜 光合速率 二氧化碳 塑料温室 

分 类 号：S642.201[农业科学—蔬菜学]