果树的贮备营养在果树的年周期中作用极大,它对树体越冬和翌春的萌芽、开花、坐果、展叶、生根有直接影响。果实的大小决定于细胞数量的多少和细胞体积的大小,而细胞数目的多少决定于贮备营养水平,体积大小决定于当年树体营养状况。因此,若树体贮备营养不足,果实的生长发育就会受到制约,甚至影响产量 The reserve nutrition of fruit trees plays an important role in the annual cycle of fruit trees. It has a direct impact on the winter of the tree and the germination, flowering, fruit setting, leaf display and rooting of the next spring. The size of the fruit depends on the number of cells and the size of the cell volume, and the number of cells depends on the level of reserve nutrients, the size depends on the current tree body nutritional status. Therefore, if the tree reserves lack of nutrition, the growth and development of the fruit will be restricted, and even affect the yield