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为提高山葡萄(Vitis amurensis Rupr.)主栽品种双红、双优和左优红的果实品质和产量,对结果枝进行了不同留叶数的摘心试验。结果表明:留2片叶摘心,3品种均表现出坐果率、果穗重、含糖量、出汁率和产量偏低,果粒重和总酸高;留3～5片叶摘心,果穗重、含糖量、出汁率较高,总酸含量较低,坐果率和产量中等;留6～7片叶摘心,坐果率、产量和总酸较高,但果粒重、果实含糖量和出汁率较低,果穗松散,而且增加了夏季修剪的用工量。
In order to improve the fruit quality and yield of Shuanghong, Shuangyou and Zuo Youhong, the main cultivars of Vitis amurensis Rupr., The topping experiments of different branches were carried out. The results showed that: with 2 leaves topping heart, 3 varieties showed fruit set rate, ear weight, sugar content, juice yield and yield were low, fruit weight and total acidity; 3 to 5 leaves topping, ear weight, Sugar content, higher juice yield, lower total acid content, medium fruit yield and medium yield; 6 to 7 leaves topping, setting rate, yield and total acid were higher, but fruit weight, fruit sugar content and juice Low rate, loose ears, but also increased the amount of summer pruning.