山葡萄结果枝不同时期摘心对果实品质和产量的影响

以酿造冰红山葡萄酒新品种"北冰红"及酿造干红山葡萄酒新品系94-7-759、8-8-168、2001-6-135为试材,进行结果枝不同时期摘心试验。结果表明:留1~2片叶摘心,由于摘心强度大,4个品种(品系)均表现果实成熟度差、坐果率、果穗重、果实含糖量、出汁率和产量低,果粒重、果实总酸含量、"青绿粒"和冬芽萌发率高。留6~7片叶摘心,坐果率、产量和总酸较高,果粒重、含糖量和出汁率偏低、果穗松散,而且增加夏季修剪的用工量。留3~5片叶摘心,果穗重、含糖量和出汁率高,总酸含量低,坐果率和产量中等。特别是留4片叶摘心,表现果穗大、果穗上"青绿粒"少、结果枝冬芽末萌发,果实总酸含量低、含糖量和出汁率高。4个品种(品系)适宜摘心保留叶片数量是在结果枝最上端一个花序留4片叶摘心。

Effect of Different Leaves Pinching of Bearing Branches on Fruit Quality and Yield in Vitis amurensis Rupr.

This experiment was carried out by pinching bearing branches in different periods on the new variety Beibinghong and the new strains 94-7-75,98-8-165 and 2001-6-135.The results showed that fruit maturity was poor;fruit setting rate,ear weight,fruit sugar content,juice yield,yield were low;fruit grain weight,fruit total acid content,green grainand winter buds germination rate were high for 1~2 leaves pinching in four varieties(strains).Fruit setting rate,production,fruit total acid were high;ear weight,fruit...