摘要
对我国主要栽培的２１种蔬菜作物的光合与蒸腾特性进行了研究。通过测试和回归分析，确定了各种蔬菜作物的光补偿点、光饱和点、ＣＯ２补偿点、ＣＯ２饱和点和蒸腾速率，可作为合理群体结构的调控、保护地ＣＯ２施肥、合理灌溉的理论依据和指标。研究结果还表明，大多数蔬菜光合速率和蒸腾速率的日变化呈双峰曲线，两“峰值”分别出现在１１∶００和１３∶３０～１４∶００前后（因蔬菜种类和测定季节而异），１３∶００有一“低谷”即“午休”；“峰值”和“谷值”大小因蔬菜种类而异。
This experiment was carried out to study the characteristics of photosynthesis and transpiration of 21 vegetable crops in China. Light compensation point,light saturation point,CO 2 compensation point,and CO 2 saturation point of each vegetable crop were determined. They provided scientific basis and norm for vegetable production in regulation of rational canopy composition,CO 2 fertilization in protocted culture,and rational irrigation. The result showed that diurnal change of photosynthetic rate in most vegetables was double peak curve. One was at 11∶00 and the other was at 13∶30～14∶00. There was a deep valley at 13∶00,namely midday depression.
出处
《园艺学报》
CAS
CSCD
北大核心
1997年第2期155-160,共6页
Acta Horticulturae Sinica
关键词
蔬菜
光合特性
蒸腾作用
Vegetable crops
Photosynthesis characteristics
Transpiration
