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坠枝和拉枝都是用来开张果树枝条角度,都能达到缓和树势,促进花芽分化和早果丰产的目的。但在生产运用上,坠枝不如拉枝效果好。这是因为:(1)坠枝的角度不易拉制,其角度会随着枝条持续下垂而不断开张,结果是或角度不开张,或开张过了头。(2)坠枝因其下垂有限,为了达到开张角度,往往会使坠枝成弓型,容易冒条。(3)坠枝时间不易掌握,且只能开张角度,不能改变被坠枝方向,而拉枝则既能开张角度,又可改变坠枝方向。
Falling branches and pulling branches are used to open branches of fruit trees point of view, can achieve the purpose of alleviating the tree vigor and promote flower bud differentiation and early fruit yield. However, in the production and use, not as good as pulling branches. This is because: (1) the angle of falling branches is not easy to draw, and its angle will continue to open as the branches continue to sag, with the result that the angle is not open, or opened too far. (2) falling branches due to its sag is limited, in order to achieve the opening point of view, tend to fall into a bow, easy to take the bar. (3) Not easy to grasp the falling branch time, and can only open the point of view, can not be changed direction of the falling branch, and pull the branch can both open the point of view, but also change the direction of the branch.