果树的花芽在上年的夏秋就已形成。但一般在当年分化并不完善,到次年早春萌动时还要继续分化才能完善。而这一分化主要依靠上年秋冬贮藏的养分和早春发芽前的水肥供应条件。果树有花无花决定于上 Flower buds of fruit trees were formed in the summer and autumn of the previous year. However, the general differentiation in that year was not perfect, and the following spring, the germination should continue to differentiate in order to improve. And this differentiation depends mainly on the nutrients stored in autumn and winter last year and the conditions of water and fertilizer supply before germination in early spring. Fruit trees have flowers and decide on