Pruning should not be performed in late summer or early spring, however any other time of the year is fine.
修剪不能在早春或夏末进行，在一年中的其它时间都可以。
Summer pruning devitalises the tree on an extent and consequently reduces excessive vigour.
夏剪能在一定程度上减弱植株的生命力，从而削弱过分的生长势。
The major part of summer pruning is the upper half of crowns of apple trees.
夏季修剪的主要部位是树冠的上半部。
Measures for protection to frost are proposed, including selecting favorable topography and frost-resistant cultivars, smoking and summer pruning.
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。
Fruit set rates, yield and total acid content were high, but berry weight, sugar content and juice rate were low for 6-7 leaves pinching, cluster apperars relax, and more workload in summer pruning.
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。
A technological systenl of harvesting Hu Sang three times, in spring, summer and autumn, in an equal shoot yleld was set up by changing the traditional pruning and leaf harvest.
通过改变湖桑品种的枝条剪伐与桑叶收获方式．设计了湖桑全年三次等量条桑收获的技术体系。
The researchers advise growers to investigate the effects of thinning or pruning to reduce the number of fruit in early summer of the on-crop year.
研究人员建议种植者调查修剪的影响，在大年的初夏减少果实的数量。
The researchers advise growers to investigate the effects of thinning or pruning to reduce the number of fruit in early summer of the on-crop year.
研究人员建议种植者调查修剪的影响，在大年的初夏减少果实的数量。
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