The main stem was then in most cases twisted in a zigzag form, which process checked the flow of the sap, and at the same time encouraged the production of side branches at those parts of the stem where they were most desired.
然后，在大多数情况下，主茎被扭曲成z形，这一过程检查了汁液的流动，同时鼓励在茎的最需要侧枝的地方产生侧枝。
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