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半个世纪以来,植物生理学的重大成就之一是发现了在生长发育上起重要作用的五大类内源激素(生长素、细胞分裂素、赤霉素、脱落酸和乙烯)。与此同时,人们也合成了许多生长调节物质。如果说提高作物产量的传统手段有三个方面:即改良作物的遗传性;改善作物生长的环境;手工调节(如剪枝、摘心等)的话,那末现代农业增加的新技术之一,就是用植物生长调节物质调节作物的生长发育。迄今为止,已用于商品生产上的有;用乙烯利增加橡胶的产胶量;用催熟膦等增加甘蔗的糖分;用青鲜素等控制
For half a century, one of the major achievements in plant physiology has been the discovery of five major classes of endogenous hormones (auxins, cytokinins, gibberellins, abscisic acid and ethylene) that play an important role in growth and development. At the same time, many people have also synthesized a number of growth regulators. If there are three traditional ways to increase crop yields: improving the heredity of crops; improving the environment for crop growth; and manual adjustments (such as pruning, topping, etc.), one of the new technologies added to modern agriculture is to use plants Growth regulators regulate crop growth and development. So far, it has been used in the production of goods; with ethylene to increase the amount of rubber production of rubber; with sugarcane and other sugarcane to increase the sugar; with fresh green control