為避免核桃的傷流,傳統核桃修剪有兩個適宜時期:一(yi)是(shi)核(he)桃(tao)采(cai)收(shou)後(hou)至(zhi)落(luo)葉(ye)前(qian),二(er)是(shi)核(he)桃(tao)春(chun)季(ji)發(fa)芽(ya)後(hou)至(zhi)落(luo)雄(xiong)花(hua)前(qian)。第(di)一(yi)個(ge)時(shi)期(qi),由(you)於(yu)核(he)桃(tao)正(zheng)處(chu)於(yu)樹(shu)體(ti)貯(zhu)存(cun)營(ying)養(yang)的(de)重(zhong)要(yao)期(qi),此(ci)期(qi)剪(jian)去(qu)枝(zhi)條(tiao),會(hui)大(da)大(da)減(jian)少(shao)光(guang)合(he)產(chan)物(wu)的(de)製(zhi)造(zao),降(jiang)低(di)營(ying)養(yang)物(wu)質(zhi)的(de)貯(zhu)存(cun)量(liang),而(er)且(qie)修(xiu)剪(jian)越(yue)早(zao),對(dui)營(ying)養(yang)物(wu)質(zhi)貯(zhu)存(cun)越(yue)少(shao)。後(hou)一(yi)個(ge)時(shi)期(qi)修(xiu)剪(jian),樹(shu)體(ti)的(de)萌(meng)芽(ya)、展葉、長枝、雄xiong花hua發fa育yu會hui消xiao耗hao大da量liang的de貯zhu存cun營ying養yang,修xiu剪jian量liang越yue大da越yue晚wan,貯zhu存cun的de營ying養yang消xiao耗hao越yue多duo,故gu在zai傳chuan統tong的de核he桃tao適shi宜yi修xiu剪jian期qi修xiu剪jian均jun嚴yan重zhong削xue弱ruo樹shu勢shi,影ying響xiang樹shu體ti的de生sheng長chang和he結jie果guo。
據筆者多年的試驗、示範和推廣,核桃的真正適宜修剪期有三個:diyigeshiqishihetaoyebiansehouzhiluoyeqian。qiuhouhetaoyekaishibianhuangshi,yepianguanghezuoyongnenglijibensangshi,yepianyingyangyizhuanyizhishuti,cishixiujianwuyingyangxiaohao,yewushangliuxianxiang,shizuijiashiyixiujianshiqi。danciqizhengzhiqiumangjijie,shijianjiaoduan,yiban10~15天,極易錯過。第二個時期是冬季數九寒天時,此期由於晝夜溫差很小,傷流量較輕,此期一般30~40天,正處於農閑季節,麵積大和技術人員較少的核桃園宜多在此期修剪。第三個時期是核桃萌動前的一個月,一般在2月份至3月yue上shang旬xun,選xuan擇ze溫wen差cha比bi較jiao小xiao且qie天tian氣qi持chi續xu較jiao穩wen定ding的de時shi間jian段duan內nei修xiu剪jian,傷shang流liu也ye較jiao輕qing。此ci期qi要yao避bi開kai冷leng暖nuan空kong氣qi交jiao流liu頻pin繁fan的de時shi間jian段duan內nei修xiu剪jian,否fou則ze傷shang流liu會hui很hen重zhong。這zhe三san個ge時shi期qi內nei修xiu剪jian的de核he桃tao樹shu,樹shu體ti的de生sheng長chang勢shi、核桃產量及質量明顯優於傳統適宜修剪時期的修剪。
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