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过去二十多年中,对于番防止落花、落果,多是应用植物生长调节剂来解决,效果最好的是2.4—D,所以到目前为止,在生产上仍然广泛应用。由于2.4—D 对叶片的药害较重,采取浸花或涂花的方法又较费工,而且2.4—D本身也不是完全没有问题,因此,有必要探索新的有效生长调节剂来代替2.4—D。用对氯苯氧乙酸防止番茄落花、落果在国外早在四十年代末期就试验成功。(Wittwer,S.H)在国内早在1953年(李曙轩、寿诚学,1954,植物学报3(1):17～30)也已试
Over the past two decades, for Fan to prevent falling, falling fruit, mostly plant growth regulator to solve the best effect is 2.4-D, so far, still widely used in production. Because 2.4-D leaves the phytotoxicity heavier, take the method of immersion or Tuhua and more labor, and 2.4-D itself is not entirely without problems, therefore, it is necessary to explore new effective growth regulators instead of 2.4 -D. Use of p-chlorophenoxyacetic acid to prevent tomato from falling flowers, fruit drop abroad as early as the late forties test success. (Wittwer, S.H) in China as early as 1953 (Li Shuxuan, Shou Chengxue, 1954, Acta Botany 3 (1): 17-30)