为探索苹果枝梢精准化调控技术，以苹果品种烟富3号为研究对象，对其高纺锤形苹果树不同类型侧枝的生长发育、结果效率及果实品质等进行了观察。结果表明，大型侧枝单位长度结果数为1.53个/m，小型侧枝单位长度结果数为8.19个/m。下垂结果枝单位长度结果效率最高，为15.59个/m；倾斜结果枝单位长度结果效率最低，为6.74个/m。不同类型结果枝在果实大小和可溶性固形物含量上无明显差异。另外，侧枝枝龄对花芽类型具有明显影响，枝条的尖削度越大生长越不稳定。枝条生长模式直接影响花芽形成、结果效率和果实品质，精准调控枝梢生长，维持树势和枝势稳定是优质高产的关键。

In order to explore the precision control technology of apple branch, the growth and development， bearing and fruit quality of different branches of tall-spindle apple trees were investigated and analyzed by using the apple variety Yanfu 3 as the experiment material. The results showed that the number of fruit per unit length of large lateral-branches was 1.53/m, while the number for the small lateral-branches was 8.19/m. The efficiency per unit length of drooping-branches was the highest, i.e., 15.59/m, while the efficiency per unit length of inclined-branches was the lowest, i.e., 6.74/m. However, no significant differences in fruit size and total soluble solid content among different branches were detected. In addition, the age of lateral-branches had a significant effect on the type of flower buds, and the larger the taper-degree of branches was, the more unstable the growth was. The growth pattern of apple branches directly affected the formation of flower buds, bearing and fruit quality. It is essential to accurately regulate branch growth and maintain the stability of tree vigor and branch vigor to achieve high-quality and efficient fruit production.

S661.1