据山东省莱西市职业中等专业学校于新刚在牛溪埠乡山楂园试验,对山楂强旺辅养枝进行环锯比环剥效果好。经过环锯后,第二、三年抽生的中、短枝分别占28.4%和37.5%,长势减弱,容易形成花芽。环锯方法:冬季修剪时,对强旺辅养枝视其周围空 Lacey City, Shandong Province, according to occupational secondary specialized schools in the new Niu Xiu Bu Xiang Hawthorn Park test, Hawthorn strong supporting branch ring saw better than girdling. After ring sawing, in the second and third year of pumping, the spur and spur respectively accounted for 28.4% and 37.5%, the growing weakening and the easy formation of flower buds. Ring Saw method: Winter pruning, the strong supporting branch as strong as the surrounding empty