丰水梨的生长结果习性都有哪些?

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2025-03-15 05:36:12
推荐回答(1个)
回答1:

丰水梨是由日本引进的砂梨系统优良新品种,与幸水、新水和菊水梨的生长结果习性有许多共同之处。

与整形修剪有关的生长结果习性,主要有以下几个方面:

1.萌芽率高,成枝力强 在二三年生树上,长势强壮的长枝缓放后,其萌芽率随枝条角度的开张而提高。据威海市果树研究所观察,长度在70厘米以上的一年生强枝中度短截后,平均可抽生长枝3.2条,中枝2.7条,短枝和叶丛枝5.9条。其枝条角度开张的大小,与萌芽率和成枝力的关系如下表:

附表

在成龄树上,短枝和叶丛枝占87.7%,中枝占7.1%,长枝占5.2%。

2.有腋花芽结果习性 丰水梨以短果枝结果为主,所结果实质量好。短果枝很易形成鸡爪状的短果枝群。进入结果期以后,短果枝群抽生中、长枝的比例仍然较高(与晚三吉梨相比较),中枝和长枝,当年都有形成腋花芽的习性,这是早期丰产的有利条件,修剪时应注意利用。

丰水梨的强壮长枝的硬度,软于晚三吉,秋季能够自然开张,但对直立强枝,仍需人工开角。

3.自然结实能力强 据威海市果树研究所花期套袋试验,自花授粉的花序坐果率100%,花朵坐果率88.5%。

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