不同整形和密度对桃树生长和结果的影响

对桃树不同树形和不同密度组合的栽培试验研究表明 ,桃树产量受栽植密度和整枝方式的双重因素影响 ,在同一整枝方式下 ,密度越大 ,早期产量越高。在 3种不同的整枝方式中 ,12 45株 / hm2的 Y字形每公顷产量明显高于同一整形方式的 82 5株 / hm2的处理 ,同样比篱壁形和三主枝开心形的每公顷产量高出 5 0 %。整枝方式对桃树生长影响不大 ,栽植密度与生长呈负增长趋势。篱壁形光照分布均匀一致 ,果实着色好。Y字形树体结构简单 ,修剪量轻 ,节约用工 ,比其他两种树形具有明显优势 ,适宜在生产中推广应用

Effect of different pruning on growth illumination of peach tree and fruit output quality

Results of cultural experiments showed that the plant density and pruning style affect the output of peach fruit.With the same training method,the greater is the plant density,the higher is the output in the early stage.With the Y shaped training and pruning (only remains two main big branches),the plant density affects the fruit output.The output (kg/hm 2) of 1 245 trees per hectare is obviously higher than that of 825 trees per hectare.Comparing the other two kinds of pruning (one is the tree remaining the trunk with two branches but the Y shaped training remains two branches on the top of the trunk,the other training remains three big branches on the top of the trunk) with the same plant densit (1 245 trees/hm 2),the output was more than 50%.The different training and pruning ways have less effects on the peach tree growth.The growth speed was negtively related to the plant density.The tree trunk with two branches has even illumination and well red coverage.Y shaped trees have less main big branches,pruning and training easier,and need fewer workers,have more obviouse advantages than the other two kinds of training and pruning,so it is a better training and pruning way in fruit production.