摘要
高光呼吸低光效的C3作物,要比低光呼吸高光效的C4作物对CO2需要量高得多。当CO2浓度增加1000mg/kg时,黄瓜、番茄和青椒可分别增产83.28%、69.12%和49.28%,随之CO2浓度的增加,提高了C3作物的光饱和点,从而提高了光能利用率,增强了光合作用。同时,又抑制了C3作物的光呼吸作用,减少了不必要的能量消耗。
Comparing with C4 crops, C3 crops need more CO2 because of their high light respiration rate and low photosynthesis rate. When the concentration of CO2 reached 1 000 mg/kg, production of cucumber, tomato and pepper increased by 83.28%, 69.12% and 49.28% respectively. The increase of CO2 raised light saturated point, so the photosynthesis rate lifted and sunlight energy use efficient improved. At the same time, light respiration rate of C3 crops was limited and lose of energy was reduced.
出处
《吉林农业科学》
CSCD
2004年第4期35-37,共3页
Journal of Jilin Agricultural Sciences
关键词
CO2
C3作物
光合作用
饱和点
光呼吸
CO2
C3 crops
Photosynthesis
Light saturated point
Light respiration
