丁岙杨梅初结果树结果枝短截修剪的保果效应

Fruit Retention of Bearing Branches by Cutting Back Pruning of Myrica rubra cv. Dingao

对丁岙杨梅进行了结果枝短截修剪保果试验,结果表明:着果的长果枝比例由自然状态下的21.3%提高到84.4%,着果的中果枝比例由52.9%提高到92.6%;结果枝短截修剪有增加早期幼果大小的效应;硬核期幼果大小的总趋势是:剪去1/5花芽量的轻短截修剪>剪去2/5花芽量的中等强度短截修剪>剪去3/5花芽量的重短截修剪>对照;在丁岙杨梅开花前至初花期,对长果枝、中果枝进行轻短截修剪,分别剪去中果枝和长果枝1/5的花芽量,以去除长果枝、中果枝顶端的叶芽,能达到解决果梢矛盾、提高着果的结果枝比例的效果。

Experiment was conducted on fruit retention by cutting back pruning of Myrica rubra cv.Dingao in Wenzhou,Zhejiang province.The result demonstrated that cutting back pruning of bearing long branches had increase of the rate of fruit setting from 21.3% to 84.4%,and bearing medium branches from 52.9% to 92.6% compared with natural growth ones.Cutting back pruning of bearing branches could increase the size of early fruits.Trend the size of fruits at stone hardening stage was： cutting back pruning of 1/5 flower buds that of 2/5 flower buds that of 3/5 flower buds control.The experiment resulted that cutting back pruning of 1/5 flower buds at long and medium bearing branches before flowering till early flowering stage of M.rubra cv.Dingao had advantages of removing their apical leaf buds and increase of ratio of bearing branches.