zaiyuanlinlvhuazhong，youyuyixieshumujuyouguanxingxiazhaidetedian，huozheyouyuguanlibudang，yixieyuanbenguanfukaizhangdeshumubiandezheyinmianjipianxiao，shenzhiyingxiangshumushengzhang。neimeyoumeiyoubanfaduizheixieshuguanjiaozhaideshumujinxingkuoguanni？dangranyou，xiamianweinijieshaojizhongchangyongdelvhuamiaomukuoguandefangfa。
方法一：通过修剪扩冠。有些树种的树冠天生狭窄，我们可以通过修剪来改造树冠，使树冠更加开张。此方法适用于那些耐修剪，萌芽力较强的苗木。以楸树为例，春季待新生枝条长至30厘米左右时，在与顶端较近的枝条中，选取3个至4个长势强壮，分布均匀，且不在同一轨迹上的枝条作主枝，其余新生枝条全部剪除，在生长期内，主干还会抽生一些芽子，都应及时抹除。秋末落叶后，对所选留的主枝进行中短截，保留40厘米至60厘米，留芽一定留外芽。
第二年春末，对主枝上新生的小枝进行筛选，每个主枝上保留1个至2个新枝做侧枝，所选枝条要长势健壮且不能相互交错，其余枝条全部疏除，秋末落叶后再对这些枝条进行中短截，同样保留外芽。经过上述修剪后，楸树的基本树形就形成了，在以后的养护中，只需要对下垂枝、交叉枝、过密枝、病虫枝、干枯枝进行疏除即可。按照以上方法来做，楸树的树冠可以得到有效扩张。
fangfaer：zhichengfa。duiyuyixiexiaoqiaomuhuozhedaguanmu，keyicaiquzhichengfalaikuozhangshuguan。ruxifuhaitangdetedianshizhuxingqiaoli，jiushishuoqizhuzhidekaizhangjiaodujiaoxiao，zhenggeshuguanchengshouzhangtiaoxing，ruzaijiashangzhongzhimiduguoda，shuguangengjiazhaixiao。zheizhongshuxingzaiguzhihuoduizhishiguanshangxiaoguoqianjia。kecaiquanshezhichengdebanfalaicushiqishuguankuoda，youxiaotigaoguanshangxiaoguo。
juticaozuofangfashixuanquxianglinjiaojindezhitiao，zaizhuzhijianyongshugunjiangerzheqingqingchengkai，lianggeyuezhihou，zhitiaodejianjujiuhuizengda，congershishuguankaizhang。xuyaozhuyideshi，anshezhichengyingxunxujianjin，bukeyibudaowei，yimiansunhuaizhitiao。
fangfasan：lashenfa。duiyuyixieyouyushuyuxiujian，eryoubunengdadaokuofudixiujiandeshumu，womenkeyicaiqulashenfajinxingkuoguan。ruduiyuyixieguanxingbukaizhangdebitao、yuyemei，womenjiukeyicaiyonglashenfa。cifajiushiyongxishengzuolashengongju，yitouxizaizhuzhishang，lingwaiyitouxizaidijueshang，shixishengjinbeng，qichiduzaiyubujiangzhitiaolapilie，younengyouxiaoshizhuzhiyuzhugandekaizhangjiaoduzengda。lashenfahezhichengfayiyang，yaoxunxujianjin，bukeyibudaowei，fangzhizhuzhiyuzhuganfashengpilie。cifazaishiyongtaodeshengchanshangyiyouyingyong，feichangjianxiao，zhidetuiguangyingyong。
