多效唑在果树上的应用１桃２—４年生幼旺树或密植园，在新梢５—１０厘米时，喷施浓度为１５００—３０００ｐｐｍ；也可在秋季或早春或营养生长高峰期土施３～４．５克／株。其作用是抑制新梢生长，提高花芽质量，增加座果和单株产量。２梨幼旺树，于４月下旬至５月中旬... Application of paclobutrazol in fruit trees 1 peach 2-4 year-old tree or close planting, 5-10 cm in shoots, spraying concentration of 1500-3000ppm; also in autumn or early spring or vegetative growth peak 3 ~ 4.5 g / plant. Its role is to inhibit the growth of shoots, improve the quality of flower buds, increase fruit yield and per plant. 2 pear Wang tree, in late April to mid-May ...