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问答题

什么叫拉枝、拿枝、曲枝、扭枝?

发布日期:2020-12-11

什么叫拉枝、拿枝、曲枝、扭枝?

试题解析

拿枝

指用手握住枝条从基部向梢头逐渐移动并轻微折伤木质部,促使枝条角度开张。

中文名
拿枝
别名
捋枝,拿枝软化

扭枝

扭枝,果树生产上控制与利用旺枝的一种方法。对强势的新梢,在基部开始半木质化时,握住初步硬化部位向树冠空隙处旋转扭曲。有改变枝梢生长方向,削弱生长势,合理利用空间,以利生长与结果的作用。操作时先扭后曲,减轻韧皮破裂,使枝端略呈水平或悬垂状态。扭枝兼有促进结果与更新的效用。为桃、苹果等果树夏季修剪方法之一。对果树进行“弯枝”处理,其理同此。

拉枝

拉枝就是人为地改变枝条的生长角度和分布方向的一种整形方法。拉枝对培养树体骨架结构、合理枝条空间分布、改善光照通风条件、改变枝条极性、调整枝条势力、促进或抑制枝条生长,以及调整果树生长与结果矛盾等都具有非常重要的作用。

中文名
拉枝
作用
合理枝条空间分布、改善光照通风条件、改变枝条

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此试题出现在

大学试题

农学

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