在盆栽条件下比较了 4种国际水稻研究所水稻新株型和 4种籼稻的气孔频率、气孔阻力和光合速率。结果表明 ,新株型的气孔频率显著低于籼稻 ,而气孔阻力高于籼稻 ,导致胞间CO2 浓度减小 ,光合作用的气孔限制增大。在正常生长条件下 ,新株型的光合速率低于籼稻品种 ,并且与气孔阻力呈显著负相关 Stomatal frequency, stomatal resistance and photosynthetic rate of four new rice plant types and four indica rice varieties were compared under potted conditions. The results showed that the stomatal frequency of the new plant type was significantly lower than that of indica rice, while the stomatal resistance was higher than that of indica rice, resulting in the decrease of intercellular CO2 concentration and the increase of photosynthetic stomatal limitation. Under normal growth conditions, the photosynthetic rate of the new plant type was lower than that of the indica rice and it was negatively correlated with the stomatal resistance