京白梨是北京郊区原产的名贵品种,其优点很多,但存在有隔年结果现象,为此、我们观察了其花芽分化的特征,以有助于模索出解决隔年结果的原因。于1979、1980两年,观察19年生的京白梨5株,植株树势生长中庸偏旺,管理正常、无严重病虫害,其大年单株产量80～100斤左右,小年产量为50—60斤左右。每株以基部三主枝为基础,选3年生左右枝余,观察其上面着生的短果枝芽子。为了验证花芽质量,在同一 Jingbai pear is a native of Beijing suburbs rare varieties, its advantages are many, but there are the phenomenon of the second year results, therefore, we observed the characteristics of its flower bud differentiation, to help find out the model to solve the next year’s causes. In 1979 and 1980, five pears of Peking White Pear were observed for 19 years. The growth vigor of plants was moderate and moderate, with normal management and no serious diseases and pests. The annual yield per plant was about 80 ~ 100 kg and the annual yield was 50 - About 60 pounds. Each plant is based on the three main branches of the base, about 3 years left and right sticks, observed on the surface of the students with short branches buds. In order to verify the quality of flower buds, in the same