夏季修剪的主要部位是树冠的上半部。
The major part of summer pruning is the upper half of crowns of apple trees.
雷德克纳普正在考虑在夏季修剪他的球队，但不排除让基恩回来，西汉姆租借令人失望。
Redknapp is looking to trim his squad over the summer, but has not ruled out keeping Robbie Keane following a disappointing loan spell at West Ham.
提出预防霜冻的措施，主要包括：选择有利地形、选择抗霜冻品种、采取熏烟和夏季修剪等措施。
Measures for protection to frost are proposed, including selecting favorable topography and frost-resistant cultivars, smoking and summer pruning.
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