日本试验一种新植物生长刺激素“乙烯利”(Ethrel),作用广,应用简便。其化学名称为2—氯乙基磷酸,结构式为 Cl CH_2 CH_2 PO(OH)_2。“乙烯利”的主要作用有以下几种:一、打破种子休眠,促进发芽。以发芽率低(50—60%)的花生种子作试验材料,用百万分之三的“乙烯利”处理,可使发芽率增至80%。莴苣种子因高温往往发芽不良,用“乙烯利”处理后发芽力得到恢复。 Japan test a new plant growth hormone “Ethrel ” (Ethrel), a wide range of applications, easy to use. Its chemical name is 2-chloroethyl phosphoric acid, structural formula Cl CH 2 CH 2 PO (OH) _2. “Ethephon ” the main role of the following: First, to break the seed dormancy and promote germination. Using germinated peanut seeds with a low germination rate (50-60%) as the test material, the germination rate was increased to 80% by treatment with 3 parts per million “ethephon”. Lettuce seeds often germinate due to high temperatures, with “ethephon ” after treatment, germination was restored.