问:叶片为什么能吸收肥料?答:人们发现叶片能吸收肥料的时间是在近代,科学家把植物的叶片浸在化肥溶液里,然后在显微镜下观察叶肉细胞,发现细胞中有化肥的结晶。当放射性元素被发现后,把带有放射性元素的肥料溶液,用毛笔涂在叶片上,几天后发现植物根部也有放射性元 Q: Why can leaf absorb fertilizer? A: The time when foliage can absorb fertilizer is that in modern times, scientists immersed the leaves of plants in fertilizer solution, and then observed mesophyll cells under a microscope to find out the crystallization of fertilizers in the cells. When the radioactive elements were found, the fertilizers with radioactive elements were painted on the leaves with a brush, and a few days later the plant roots were also found to have radioactive elements