夏邑县农业局于1988-1990年,在大豆始花期进行了喷洒多效唑试验.设喷洒多效唑50、100、150、200ppm,以喷清水为对照,喷药液量为每亩50公斤.结果表明,喷施多效唑后,大豆叶绿素含量提高,从而提高了大豆的光合作用和同化能力;有效地抑制了大豆的株高,根的吸收能力加强;单株有效荚数、单株粒数、百粒重及产量均提高,喷施浓度50、100、150、200ppm的比对照分别增产14.7%、16.3%,18.9%和15%,以喷施150ppm Xiayi County Bureau of Agriculture in 1988-1990, the beginning of flowering soybean was sprayed with paclobutrazol test set up spraying paclobutrazol 50,100,150,200 ppm, spraying water as a control, the spray volume of 50 kg per mu. The results show that , Spraying paclobutrazol, soybean chlorophyll content increased, thereby increasing soybean photosynthesis and assimilation; effectively inhibited the soybean plant height, root absorption capacity to strengthen; effective pods per plant, grain number per plant, a hundred particles Weight and yield were increased, sprayed concentrations of 50,100,150,200 ppm than the control respectively 14.7%, 16.3%, 18.9% and 15%, to spray 150ppm