据《Scientia Horticulturae》(2012年)报道,来自日本盛冈NARO果树科学研究所的研究人员研究了苹果落果与营养源强度、品种之间的关系。疏果是商业栽培高品质果实的关键环节,部分额外小果脱落是果树生理的自我调控。自然落果程度受环境条件和品种影响。同一果束内小果脱落数目受果束内叶片数量影响。 According to “Scientia Horticulturae” (2012), researchers from NARO Institute of Fruit Science, Morioka, Japan, studied the relationship between apple drop and nutrient source intensity and variety. Thinning fruit is the key to commercial cultivation of high-quality fruit. Some extra small fruit shedding is the physiological regulation of fruit trees. The degree of natural fruit drop is affected by environmental conditions and varieties. The number of fruit shedding in the same fruit bunch is influenced by the number of leaves within the fruit bunch.