桃树Y字形整枝密植栽培

通过对桃树不同密度的试验研究，结果表明：在栽植密度分别为每公顷８２５株，１２４５株，２５０５株的情况下，其早期生产效能为每公顷２５０５株的公顷产量＞每公顷１２４５株的公顷产量＞每公顷８２５株的公顷产量。因而证明Ｙ字形整枝适宜的密度为每公顷１２４５～２５０５株。该树形树体结构简单，修剪量轻，容易整形，操作方便。而且具有成形快、结果早和产量高的优点。其整形修剪技术以夏剪为主，冬剪为辅。幼树修剪要轻，整形与结果相结合，以果控冠。成年树修剪适中，控上促下，使其高产稳产。

Culture of Densely Planted Peach Trees with Y Shape Training

The results of experiment on different planting density of peach trees with Y shape training showed that yield per hectare of planting 2505 trees per hectare was highest,followed by planting 1245 trees per hectare and planting 825 trees per hectare,which demonstrated that planting from 1245 to 2505 trees per hectare with Y shape training was most suitable planting density. Y shape was simple in tree structure,required less pruning,easily trained,and was convenient for working. It also had advantages such as fast development of tree shape,early bearing and high yield. The pruning of Y shape peach trees was mainly summer pruning with dormant pruning as supplementary pruning. For young peach trees,pruning must be light with combining training with fruiting to control tree size by fruit bearing. For mature peach trees,pruning should be moderate with controlling growth of the upper part and encouraging growth of the lower part of the tree crown to attain stable,high yield.