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植物的生长,主要是细胞数目的加多和体积的增大,偏重在量的变化;植物的发育,则主要是细胞(包括组织)和器官的分化,特别是花的出现,偏重在质的变化。植物的生长和发育是十分紧密地联系在一起的,但又是可以区别的两个综合生理过程或整体生理。比如在实践中我们常看到,在瘦田里作物生长很短小,很早就开了花;而在非常肥沃的田里作物枝叶生长得很茂盛,却迟迟不能开花。这说明,植物的生长和发育是可以区别开来的。只是它们对于外界条件的要求,严格程度有所不同而已。生长要求的外界条件比个别生理过程(如
Plant growth, mainly the increase in the number of cells and the increase in volume, emphasis on the amount of change; plant development, the main cells (including tissues) and organ differentiation, especially the emergence of flowers, emphasis on quality Variety. Plant growth and development are very closely linked, but are two distinct physiological processes or overall physiologies. For example, in practice, we often see crop growth is very short in thin fields, blooming early; in the very fertile fields, crop foliage grow very lush, but still can not blossom. This shows that plant growth and development can be distinguished. Only their requirements for external conditions, the degree of strictness only. Growth requirements of the external conditions than individual physiological processes (such as