葡萄不结果是什么原因?

2025-01-04 13:16:51
推荐回答(4个)
回答1:

葡萄有了病害了,葡萄病害
1)葡萄黑痘病:为害果穗、果梗、叶片、新梢及卷须等,引起浆果变小,梢叶畸形干枯。在欧洲葡萄品种上发病严重,欧美杂种葡萄品种上发病较轻,美洲葡萄品种上则基本不发病。病菌以菌丝在病组织中越冬,次年借风雨传播。长江流域发病重于淮北地区。防治方法:因地制宜选栽适宜品种。提高枝蔓在篱架架面上的分布位置,或改用棚架栽培.减少发病机会。休眠期彻底清园,清除病枝、病叶、病穗,减少侵染来源。芽膨大期喷波美5度石硫合剂和0.3%~0.5%五氯酚钠混合液或喷10%硫酸铵溶液,铲除越冬病菌。花前、花后各喷一次200~240倍石灰半量式波尔多液,保护花穗和果穗;后期也可用50%百菌清500倍液与波尔多液交替使用。及时摘心和抹除副梢,减少幼嫩组织的感染。
(2)葡萄白腐病:为害果实、果梗、穗轴、枝蔓及叶片,引起浆果软腐、果穗脱落,枝蔓从近地表处或机械伤部位缢缩枯死。病菌在病组织中越冬,并防病残体散落于表土中,次年借风雨飞溅传播。7~8月间遭暴风雨或雹害后,常导致此病流行。防治方法:采收后彻底清园,清除地面上的各种病残体,剥除枝蔓外老皮。提高结果部位,改善风光条件。生长期间每隔15~20天喷药一次,药剂可用50%百菌清500信液,0.l%福美双和0.l%代森锌混合液,或50%退菌特600~800倍液。掌握暴风雨或雹害过后务必喷药一次。
(3)葡萄霜霉病:以为害叶片为主,也为害嫩梢和果实,引起叶片发育畸形,提前脱落,果实干缩或软腐开裂。病菌在病残体内越冬,次年温湿度适宜时产生孢子进行侵染为害。多雨、多雾,园地通风不良,该病发生严重。长江流域发病重于淮北地区。防治方法:经常捡拾病叶、病果烧毁,清园,雨季注意国内排水,降低空气湿度,增施磷、钾肥,提高植株抗病能力。雨季开始前,每隔10~15天喷一次160~200倍的石灰少量式波尔多液;或在发病季节用40%乙磷铝300~500倍液连喷2~3次,或25%甲霜灵500~700倍液连喷2~3次,喷药间隔期15~20天。
2.虫害主要有葡萄二星叶蝉、葡萄透翅蛾及葡萄红蜘蛛等。
(1)葡萄二星叶蝉:以若虫、成虫群集叶背吸食汁液为害,常引起叶片褪绿和早落。淮北地区一年发生2~3代,以成虫在杂草、枯枝落叶或土块下越冬。防治方法;清除园内的杂草和枯枝落叶并烧毁。生长期及时摘心和袜除副梢,改善通风透光条件。第一代若虫大量发生时,喷40%乐果乳剂1500倍液,25%扑虱灵800~1000倍液或50%敌敌畏乳剂1000倍液。
(2)葡萄透翅蛾:以幼虫为害新梢、花穗梗及老蔓,引起被害枝蔓干枯易折。每年发生1代,以老熟幼虫在枝蔓中越冬,次春化踊,在葡萄开花前后,成虫羽化,交尾产卵于新梢芽腋处,每处一粒。幼虫先为害新梢,有转梢为害习性,约8月前后下移至老蔓为害。防治方法:冬季剪除虫枝烧毁。葡萄花期前后各喷一次50%杀螟松乳剂1000倍液,或50%亚胺硫磷乳剂1000倍液。绑扎新梢时发现虫梢及时摘除,后期可用敌百虫溶液注射蛀孔,或用毒签触杀幼虫

回答2:

葡萄只见花不结果, 其主要原因是: 1.栽植的葡萄可能是雌性 .花品种.该品种不能进行正常 的授粉受精,自然也就不能结 果,如西北常见的古老品种花 .叶白鸡心、黑鸡心、兰州大葡 ,萄、安吉文等。 2.庭院葡萄往往肥水充 ·足,生长旺盛,种植者不懂修剪 ’技术,以为生长越旺越好,导致 .枝条徒长,内部庇荫严重,枝蔓 ·及芽眼成熟度差,不利于花芽 .的形成及座果。 3.在花穗营养供应状况差 ,的情况下,花期又遇上不良气 .候条件(如阴雨连绵、持续高 ·温)影响授粉受精及座果。 针对以上原因,可以采取以下措施; 一是更换品种或旁栽适宜的两性花授…

回答3:

葡萄不结果的原因:
1.生长环境不利:种植葡萄时,光照和通风比较重要,如果生长在光照不足、通风不良的环境下,它结的果实会一年比一年少,直至不结果。
2.肥料不足:种植葡萄是肥料很关键,施足基肥,在夏秋时,就要不断的追施肥料,为了第二年积累养分,这样在第二年春季时才能多萌发更多的枝叶。
3.品种原因:有些朋友在购买种苗时,可能被商家坑了,买到品质极差的幼苗,在种植后再勤加管理,这种苗也不会结果。
4.时间未到葡萄尤其自己的结果时间,有些幼苗在购买回来时,苗龄较短,只有1-2年。

回答4:

葡萄坏了

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