在葡萄生产中,常出现结果部位上移、树势衰弱等问题。这样会影响葡萄的连年丰产和稳产。生产实践证明,用三主蔓轮流更新法(在加强肥水管理及合理负担的基础上),即可避免这些问题的发生,从而可以保持葡萄的长期旺盛生长和高产稳产 In the production of grapes, there are often problems such as the upward shift of the results and the weakness of the tree. This will affect the grapes year after year yield and stable production. Production practice has proved that with three main rotation rotation method (on the basis of strengthening fertilizer and water management and reasonable burden), you can avoid these problems, so as to maintain the long-term vigorous growth of grapes and high yield