红富士苹果幼树主干环割三道或环剥皮0.5cm后,加涂不浓度多效唑溶液,均明显抑制了新梢和叶面积的生长,增加了短果枝和花芽数量,显著提高了单株产量,果实硬度约有增加,但因结果过多,品质下降,故应注意采用疏花疏果措施,保证增产增收。施用浓度以4000PPm效果最好。 Red Fuji apple saplings trunk ring ring cut three or ring peeling 0.5cm, add coated concentration paclobutrazol solution, were significantly inhibited the shoot and leaf area growth, increased the number of short branches and flower buds, significantly increased yield per plant , The hardness of the fruit is about to increase, but due to the result too much, the quality declines, so should pay attention to using thinning and thinning measures to ensure that the increase of yield. Application concentration to 4000PPm best.