细长纺锤形是无病毒苹果树矮化密植栽培的重要树形。江苏省对该树形的研究始于 2 0世纪 80年代末 ,当时因未解决整形过程中的关键技术 ,故未建成一块较正规化的细长纺锤形苹果示范园。1993年 ,江苏省农林厅组建了协作组 ,于 1994年春在徐州果园、涟水县朱码乡新东村和 1995年春 Slender spindle-shaped virus-free apple trees dwarf dense planting important tree. The study of the tree shape in Jiangsu Province began in the late 1980s when a more standardized spindle-shaped apple-shaped demonstration garden was not constructed because of the key technologies in the shaping process. In 1993, the department of agriculture and forestry in Jiangsu Province formed a cooperative group. In the spring of 1994, the project was held in the orchard of Xuzhou, Xin Dong Village of Zhu yin, Lianshui County, and the spring of 1995