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一、整形根据生长特点和品种习性,美国杂交杏李的适宜树形为多主枝自然开心形和双层疏散开心形。1.多主枝自然开心形。干高50厘米,在主干上错落排列4～5个主枝,均按45度开张角延伸,每个主枝上2～3个侧枝,侧枝开张角60度。该树形骨干枝多,能够充分利用有限空间,实现早成形、早结
First, the plastic according to the growth characteristics and species habits, the United States suitable for the hybrid tree apricot tree as the main branch of the natural happy-shaped and double-decker happy shape. 1. Main branch of natural happy shape. Dry 50 cm high, scattered in the trunk on the main branches of 4 to 5, all by 45 degrees opening angle extension, each main branch of 2 to 3 side branches, side branches opening angle of 60 degrees. The tree branches and more branches to take full advantage of the limited space to achieve early formation, early knot