花芽是果树产量的基础,也是形成大小年的主要因素,要控制果树大小年结果,就必须研究控制花芽分化的技术措施。已有一些试验证明,在苹果幼树生长前期用高浓度B_9、乙烯利等人工合成的生长调节剂处理,有抑制顶端生长和增加开花量的作用。目前在国外生长调节剂作为苹果幼树早结果措施已被广泛应用,把化学疏除剂(萘乙酰胺)同生长调节剂(B_9或乙烯利)混合用于克服苹果隔年结果也有一些成功实例。 本试验就在这些经验的基础上,为了进一步探讨大年苹果树花芽分化不良的因素和 Flower buds are the basis of fruit yield, but also form the main factor in the size of the year. To control the annual fruit size, we must study the technical measures to control the flower bud differentiation. Some experiments have proved that in the early growth of young apple trees with high concentrations of B_9, ethephon and other synthetic growth regulator treatment, inhibition of top growth and increase the amount of flowering. At present, foreign growth regulators as apple early results measures have been widely used, the chemical sparse agent (naphthylacetamide) with growth regulators (B_9 or ethephon) used to overcome the apple every year results also have some successful examples. This experiment is based on these experiences, in order to further explore the big apple tree flower bud differentiation factors and