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多效唑(Paclobutrazol)是七十年代末研制成功并开始在农业上应用的新型植物生长调节剂。代号为PP333,化学名称是(2RS,3RS)—1—对氯苯基—2—(1,2,4—三唑—1—基)—4,4—二甲基戊醇—3。它具有抑制植物茎的伸长,延续生长,促进分蘖的发生,使植物矮壮,防止倒伏等效果。同时,据报导它还是有效的杀真菌和杀细菌剂,可防治农作物的病害。因而在农业和园艺等方面应用有着广阔的前景。
Paclobutrazol is a new plant growth regulator developed successfully in the late seventies and started to be applied in agriculture. The chemical name is (2RS, 3RS) -1-p-chlorophenyl-2- (1,2,4-triazol-1-yl) -4,4-dimethylpentan-3-ol. It has the inhibition of plant stem elongation, continued growth, and promote the occurrence of tillering, plant sturdy, to prevent lodging and other effects. At the same time, it is reported that it is also effective fungicides and bactericides, can prevent crop disease. Therefore, the application in agriculture and horticulture has broad prospects.