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用硅胶压印技术观测水稻叶片正面的气孔密度、大小和开度，所得数据用ＧＩＭＭＳ计算机软件绘制成气孔特征分布等值图。结果表明：不同取样时间气孔开度变异甚大；在叶片不同部位，以叶片中部的气孔开度较大，叶片基部的气孔开度较小；叶片顶部和边缘的气孔开度因测定时间而异。气孔大小和密度的分布也有很大的不均一性：叶片边缘气孔分布最多，叶片顶部气孔分布最少；保卫细胞则以叶片顶部的最大，叶片边缘的最小。讨论了试验结果对气孔生理研究的意义。
Silicone imprinting technique was used to observe the stomatal density, size and opening on the front of rice leaves. The data was drawn into the stoma distribution map using GIMMS computer software. The results showed that the stomatal opening varied greatly at different sampling times. The stomatal opening in the middle part of the leaf was larger and the stomatal opening was smaller at the different parts of the leaf. The stomatal opening at the top and edge of the leaf varied with the time of measurement. There are also great inhomogeneities in the distribution of stomatal size and density: the most stomatal distribution is at the edge of leaves, the stomatal distribution is the lowest at the top of leaves, the largest is at the top of leaves and the smallest is the edge of leaves. The significance of the test results on stomatal physiology was discussed.