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0:21
肉眼可见的光合作用当水生植物进行剧烈的光合作用时,产生的氧气速度超过了周围水体能够溶解氧气的上限也就是水体氧饱和。多余的氧气无法溶解,便在叶片表面凝结成肉眼可见的晶莹气泡,并会定时向上漂浮。通常需要强烈的照明、健康的植物组织,以及充足的二氧化碳。
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