论文部分内容阅读
苹果的夏季拉枝是苹果栽培中普遍运用的夏季修剪措施之一。它特别是对目前矮化密植的短枝型品种效果更好。短枝型苹果品种在夏季进行拉枝处理,能够开张各类枝的角度,削弱枝条顶端优势,促进枝下部芽的萌发,增加短枝数量,缓和长势,达到控冠的目的,使树型紧凑。并且能改善树体光照条件,有利于花芽形成和充分利用空间,达到早果早丰的目的。但是由于短枝型的生长特性有别于普通型品种,所以其夏拉枝要特别注意以下几点。1.被拉枝的选择:短枝型品
Apple’s summer shoots are one of the summer pruning measures commonly used in apple cultivation. In particular, it is better for the current dwarf and dense spur type. Spur-apple varieties in the summer branch processing, can open all kinds of branches point of view, weakening the top edge of the branches to promote buds sprout germination, increase the number of short branches, to ease the growth of the crown to achieve the purpose of making the tree compact . And can improve the tree light conditions, is conducive to the formation of flower buds and make full use of space, to achieve the purpose of early fruit early morning abundance. However, due to the growth characteristics of spur type is different from the common type, so its shura sticks pay special attention to the following points. 1. Pull the choice of branches: spur type