danyishangzhesanzhongfangfadoubunengyongyulishu。yinweilideduoshupinzhongdoushimengyaliqiang,chengzhiliruo,xinshaotingchangzao。chushalixizhongdebufenpinzhongzainanfangfeiwoyuandiheyushuiduodedifangnengfaqiushaowai,qitapinxidexinshao,yiniandouzhiyouyicishengchang,bufaqiushaoheercizhi。suoyibulunshimiaopuyumiao,haishiyoushuhechujieguoshu,xiajixiujiandoubunengyongzhesanzhongfangfa。
因(yin)為(wei)使(shi)用(yong)摘(zhai)心(xin)或(huo)剪(jian)梢(shao)後(hou),在(zai)中(zhong)等(deng)苗(miao)和(he)中(zhong)庸(yong)樹(shu)上(shang)多(duo)不(bu)再(zai)萌(meng)發(fa)抽(chou)梢(shao),這(zhe)樣(yang)就(jiu)使(shi)原(yuan)梢(shao)變(bian)短(duan),葉(ye)片(pian)減(jian)少(shao),影(ying)響(xiang)植(zhi)株(zhu)的(de)營(ying)養(yang)製(zhi)造(zao)和(he)積(ji)累(lei),不(bu)利(li)於(yu)加(jia)速(su)成(cheng)苗(miao)、成樹和早果豐產;健壯苗和強旺樹,使用摘心、剪梢後雖能很快萌發抽梢,但最多也隻能萌發兩個枝條,且抽梢時還會消耗樹體大量養分。最重要的是所抽生的枝梢,基部0~12limiduandoushibunengfayechoushaodeyehen,zhongshangbufayuduobuchongshilaoshu,daodongjianshihaidejianqu,wanquanzaochengyangfendewuxiaoxiaohaohezhishaodewuyongshengchang,suoyilishudexiajixiujianbunengyongzhaixinhejianshao。youyinlidezhishaojiaocueryingcui,muzhibuxizhi,ruguoshiyongniushao,changchangshiyiniujiupiliehuozheduan,suoyitongyangbunengyongcifa。
對於梨樹的長、粗、強旺和直立新梢,夏剪時隻可用拉枝、別枝、環剝和環割等方法處理。
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