为解决山葡萄栽培中夏季修剪费工费时问题 ,我们于 1 999和 2 0 0 1年对“双优”、“左山二”、“双丰”3个品种的成龄树进行了夏剪试验。结果表明 ,山葡萄结果枝在花前摘心时留 3～ 5片叶摘心 ,不留副梢 ,可减少夏季摘心用工量 30 %以上 ,对果实产量及品质无不良影响 ,其中以留 5片叶的表现最好 In order to solve the problem of time-consuming summer trimming in mountain viticulture, summer scissors test was conducted on the mature trees of three varieties of “Shuangyou”, “Zuosan 2” and “Shuangfeng” in 1999 and 2001 . The results showed that the fruiting branch of S. gramineus had 3 to 5 leaves topping and 3 to 5 leaves topping, which could reduce over 300% of the topping effort in summer and had no adverse effect on the yield and quality of the fruit, among which 5 leaves Best performance