The invention relates to a 3+1 tree form of a
pear tree and a shaping method thereof, belonging to the fields of pomology and
fruit tree ecology. The tree form only has three main branches and a central
trunk so as to be named as the 3+1 tree form. The tree form is small at the top and big at the bottom, thus branches on the upper part have small influences on the lower part, and the ventilation and
light transmission conditions are good. Compared with a traditional small-crown sparse-layer
pear tree form, the crown layer opening of the 3+1 tree form is improved by 14-18 percent; the fruit shape is big, and the quality is good; the content of a soluble
solid state material in a fruit is improved by 0.8-1.2 percent compared with that in a small-crown sparse-layer fruit, and the high-quality fruit rate is higher than 90 percent; and the quality of fruits is good. The tree form has short and small crown and easy shaping, and the skeleton
branch is directly connected with the branches, thus the tree form is convenient to manage and particularly suitable for Chinese
pear varieties such as hosui pears, green-crown pears, yellow flower pears, Yuanhuang pears, Shingo pears, golden pears, and the like. The tree form is an ideal tree form for
pear tree cultivation and has the characteristics of simplicity, convenience and easy application.