板栗嫁接苗的管理有哪些要点?

2025-03-15 22:34:43
推荐回答(1个)
回答1:

1.除萌蘖:由于嫁接处输导组织很不畅通,砧木的伤口周围及砧木上的芽易萌发,为避免萌蘖与接穗争夺养分,影响成活和苗木生产,应及时除去砧木上的一切萌蘖。

除萌蘖一般进行3~5次。

(2)设防风柱和松捆绑:嫁接一个月后,新梢长到30厘米时,把嫁接捆绑的塑料条松开,避免勒伤,而后再轻轻松绑上,待愈合牢固。

与此同时,为保证新梢在生长过程中不被大风吹折,可设防风柱。

支柱长度依嫁接位置高低而定,一般一个接口用一根支棍,把新梢轻轻绑在支棍上。

随着新梢生长可先后绑3~4道绳,才能不遭风折。

(3)摘心:当新梢长到30~50厘米时及时摘心,可连续摘心1~2次,以促进副梢萌发,早成树形,并使新梢充实。

大树高接换优后,新梢摘心后长出的副梢,可成为结果母枝。

(4)防治病虫害:春季萌芽后常有金龟子、象鼻虫等食虫为害叶子,可喷敌百虫等药剂。

接口处易发生栗疫病,可涂波尔多液等杀菌性药剂预防。

(5)肥水管理:为促进嫁接苗生长发育,苗圃地育苗时应注意浇水施肥和中耕除草,有条件的地区春季应浇水。

在雨季可追肥促进生长,但应控制后期肥水,利用摘心促使枝条充实健壮。

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