在自然条件下 ,大豆鄂豆 8号的光合日变化曲线为双峰型 ,但中午光合速率下降较少 ,且下午也具有较高的光合速率 ;光合速率与生态因子存在一定的相关性 ,其中光合速率与光照强度的相关系数最大 ,与相对湿度和叶片温度的相关系数较小。 Under natural conditions, the photosynthetic diurnal variation curve of soybean bean No. 8 was bimodal, but its photosynthetic rate decreased less during midday and higher at midday, and the photosynthetic rate had some correlation with ecological factors, among which The correlation coefficient between photosynthetic rate and light intensity was the highest, and the correlation coefficient between relative humidity and leaf temperature was smaller.