果树在一定枝量的基础上,能否适期形成花芽和年年分化足够数量的优质花芽,是果树能否早结果,年年稳产的关键。没有花不行,但花太多,结果小,品质差,还使树体衰弱,降低来年的产量,形成大小年。因此,调节控制果树花芽分化的数量和质量,一直是果树生产上的重要问题,也是引人注目的理论问题。果树多为多年生乔木,多次结实,花芽发育 Fruit trees in a certain amount of branches on the basis of whether the appropriate formation of flower buds and the annual differentiation of a sufficient number of high-quality flower buds, the fruit is the early result, the key to stable annual. No flowers, but too much, the result is small, poor quality, but also makes the tree weak, reducing the output of the coming year, the formation of the size of the year. Therefore, the regulation and control of the quantity and quality of fruit tree flower bud differentiation has always been an important issue in the fruit tree production and also a notable theoretical problem. Fruit trees mostly perennial trees, many times strong, flower bud development