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将番石榴幼苗置于光照强度分别为１００％、４２．４％、２１．３％的自然光照条件下，研究不同光照对其叶片生长发育的影响。结果表明：光照强度对番石榴幼苗叶片生长发育有着较大的影响。低光强降低了番石榴叶片的光合速率、蒸腾速率，使叶片中的海绵组织变薄。光强对叶片叶绿素含量影响不大。
The guava seedlings were placed in the light intensity of 100%, 42.4%, 21.3% of the natural light conditions, to study the different light on the growth of leaves. The results showed that light intensity had a great influence on the growth and development of guava leaves. Low light intensity reduces the photosynthetic rate and transpiration rate of guava leaves, making the spongy tissue in the leaves thinner. Light intensity had little effect on the leaf chlorophyll content.