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在六年生普通富士苹果上,喷施不同浓度多效唑,对其营养生长有一定的抑制效果。试验结果表明。喷施浓度为250×10~(-6)(250PPm)500×10~(-6)、1000×10~(-6)的多效唑,对春梢延长枝生长量、节间长度的抑制作用与对照差异不显著,而对秋梢抑制作用极为显著,其秋梢生长量比对照减少5.80％～75.03％,节间长度比对照缩短10.43％～80.98％。以喷施浓度为500×10~(-6)～1000×10~(-6)的多效唑效果较好。喷施多效唑对短枝率、主干周长及冠径也有一定影响。
In the six-year-old ordinary Fuji apples, spraying different concentrations of paclobutrazol, its vegetative growth has some inhibitory effect. The results showed that. The effects of spraying paclobutrazol (500 × 10 ~ (-6)) and 1000 × 10 ~ (-6) at the concentration of 250 × 10 ~ (-6) (250ppm) on the growth and internode length of spring shoots The difference between the two treatments was not significant, but the effect on the shoot tip was extremely significant. The increment of autumn shoots was decreased by 5.80% -75.03% and the internode length was 10.43% -80.98% shorter than the control. The effect of spraying paclobutrazol at a concentration of 500 × 10 -6 ~ 1000 × 10 -6 was better. Spraying paclobutrazol on spur rate, trunk circumference and coronary diameter also have a certain impact.