巨峰葡萄存在座果率低、穗形不紧凑、果粒稀、易落粒等现象。1993～1994年我们对6年生巨峰葡萄喷布多效唑试验。喷布时期为1993年5月30日,1994年5月23日。喷15％多效唑500～700×10~(-6)喷花穗,以喷清水为对照。结果表明,多效唑能提高座果率30～50％,穗轴、果梗比对照缩短1/3～1/2,穗形紧凑,果粒 Kyoho grapes exist low fruit rate, spike shape is not compact, thin fruit, easy to fall and so on. From 1993 to 1994, we tested the 6-year-old Kyoho grape spraying paclobutrazol. Spray period for May 30, 1993, May 23, 1994. Spray 15% paclobutrazol 500 ~ 700 × 10 ~ (-6) spray spikes to spray water as a control. The results showed that paclobutrazol could increase the fruit set percentage by 30-50%, the cob and fruit stems shortened by 1/3 ~ 1/2 compared with the control, the panicles were compact,