1北京平原造林树木整形修剪技术要求北京市园林绿化局2目录前言.......................................................................................................................................................................3北京平原造林树木整形修剪技术要求...............................................................................................................41 范围...................................................................................................................................................................42 术语和定义.......................................................................................................................................................43 整形修剪原则...................................................................................................................................................54 整形修剪要求...................................................................................................................................................55 整形修剪时期...................................................................................................................................................76 整形修剪次数...................................................................................................................................................77 整形修剪准备...................................................................................................................................................78 整形修剪方法...................................................................................................................................................79 安全作业...........................................................................................................................................................810 整形修剪后措施...................................................................................................................................
