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主干不明显,每丛自基部留10余个主枝,其中保留1-3年生主枝3-4个,每年剪去3-4个老主枝,更新复壮。适合于( )整形

A、迎春

B、夹竹桃

C、金钟

D、金丝桃

时间：2021-09-03 16:15 关键词：青书学堂延安大学园林植物栽培(专升本) 东北林业大学林学专升本树木学平时作业2

答案解析

A@#@B@#@C@#@D

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