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通过科学试验得知,植物体内含有多种生长激素。这些生长激素的含量很少,一般只占植物本身鲜重的百分之几;但它们对植物的生长发育很重要,密切地起着调节和控制的作用,并在一定条件下在植物体内移动和集聚。在植物体内存在的激素至少有五大类:即生长素、赤霉素、细胞分裂素、乙烯和脱落酸。它们在植物不同生长发育阶段里表现出促进和抑制两个方面的作用。促进作用包括细胞伸长、细胞分裂、生根、出芽、
Through scientific experiments that plants contain a variety of growth hormone. These growth hormone content is very small, generally only accounts for a few percent of the fresh weight of the plant itself; but they are important for plant growth and development, play a closely regulatory and control role, and under certain conditions in the plant movement And gather. There are at least five major hormones present in plants: auxin, gibberellins, cytokinins, ethylene and abscisic acid. They show both the promotion and the inhibition in different stages of plant growth and development. Promoting effects include cell elongation, cell division, rooting, budding,