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巨峰有籽葡萄怎么会变无籽葡萄

更新时间: 2020-08-18 00:00:00     

使巨峰葡萄雌性器官胚株的异常,影响葡萄的正常受精,产生无籽小果。在巨峰花期出现低温、多雨,日照不足等几项因素,使巨峰葡萄坐果不良,有核果粒很少而无核小粒很多。在巨峰葡萄栽培管理中,使植株树势过旺生长,促使花器中的赤霉素等激素含量提高,干扰正常的受精,向花器争夺养分,削弱生殖生长,造成受精的幼胚中途败育,增加无核小果。在巨峰葡萄花期,过度摘心易产生无核小果。采用无核化栽培多,产生单性结实无核小果。

关键词: 葡萄 怎么 无籽

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