试材为已定植5年的金冠(营养系去病毒的65A)。设5个处理,包括10个区组,每两株为一小区。盛花后14和39天对植株喷洒500PPm的赤霉酸(加0.025％的Ethylan cp展着剂)或2000PPm的B_9,对照植株不喷。结果表明两种生长调节剂都不影响短枝花芽开始分化的时间。但赤霉酸使长枝腋花芽分化始期延迟约1个月;B_9则使长枝顶花芽的开始分化期提早3周,其特点是与这些树新梢 The test material for the crown has been planted 5 years (Department of Nutrition to the virus 65A). Set five treatments, including 10 blocks, each two for a plot. Plants were sprayed with 500 ppm of gibberellic acid (plus 0.025% Ethylan cp spreader) or 2000 ppm of B_9 on days 14 and 39 after the full bloom, without spraying the control plants. The results showed that neither of the two growth regulators did not affect the time that buds began to differentiate. However, gibberellic acid delayed the initial stage of axillary bud differentiation in long shoots by about 1 month. B_9 increased the initial differentiation of long shoot shoots by 3 weeks,