優質冬棗口感酥甜、果實均勻、果形美觀、顏色純正。要想達到這一生產標準,一是要具備充足的通風透光條件;二(er)是(shi)要(yao)將(jiang)營(ying)養(yang)生(sheng)長(chang)轉(zhuan)化(hua)為(wei)生(sheng)殖(zhi)生(sheng)長(chang),防(fang)止(zhi)徒(tu)長(chang)造(zao)成(cheng)營(ying)養(yang)流(liu)失(shi)。開(kai)心(xin)形(xing)樹(shu)形(xing)就(jiu)能(neng)很(hen)好(hao)地(di)發(fa)揮(hui)以(yi)上(shang)優(you)勢(shi)。開(kai)心(xin)形(xing)樹(shu)形(xing)在(zai)修(xiu)剪(jian)上(shang)應(ying)注(zhu)意(yi)以(yi)下(xia)幾(ji)點(dian):
1.擴kuo張zhang角jiao度du不bu能neng太tai大da。開kai心xin形xing樹shu形xing枝zhi間jian有you充chong分fen的de伸shen展zhan空kong間jian,但dan四si圍wei果guo枝zhi擴kuo張zhang角jiao度du不bu能neng太tai大da,在zai角jiao度du上shang要yao留liu有you餘yu量liang,以yi防fang掛gua果guo後hou下xia垂chui過guo大da造zao成cheng不bu必bi要yao的de折zhe枝zhi。對dui於yu側ce枝zhi稀xi少shao的de樹shu冠guan,中zhong心xin直zhi立li枝zhi也ye可ke保bao留liu,但dan要yao控kong製zhi其qi生sheng長chang,僅jin作zuo穩wen固gu側ce枝zhi以yi防fang外wai劈pi的de作zuo用yong。
2.buliuzhilizhi。kaixinxingxiujianyibanbuliuzhilizhi,duiyuzhilizhideliucun,jinxianyufuzhushutishengchanghejianglaitiaohuanzhitouyong。duiyuliuxialaidezhilizhigengbunengrangqijieguo,zhilizhijiechudeguoshixingtibujun、品質不佳、畸形果多。
3.防止風折。開心形樹形在疏果、施藥、開甲等方麵,都比較方便。但開心形樹形在防風方麵略有不足,在中後期管理上,對部分果枝要備足竹竿兒,給予“扶助”。
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