种植果树,经常会遇到植株徒长的现象,枝条又长又粗,且分枝少,变成“霸王枝”。造成大量的养分被消耗掉,到了结果树龄也不能开花结果,或者花少产量低。果树徒长的原因主要的有如下这几个方面:一是品种或苗木本身的原因。如桃、李、梨、板栗、椪柑等品种很容易徒长;“北果南移”,也容易出现徒长;因苗木的砧木、接穗、育苗技术也会出现徒长。一般来说,用种子培育出来的实生苗种植的很容易徒长。二是修剪整形的原因。幼树整形时,大枝留得太少 Growing fruit trees, often encounter the phenomenon of plant lengthened branches long and thick, and fewer branches, into a “king branch.” Resulting in a lot of nutrients are consumed, to the results of age can not flowering results, or spend less yield. The main reasons for stumbling fruit are the following aspects: First, the species or seedlings themselves. Such as peaches, plums, pears, chestnuts, citrus and other varieties is easy to grow long; “North fruit South move”, but also prone to leggy; because of seedlings of rootstocks, scion, seedling technology will also appear leggy. In general, seedlings grown from seedlings are easy to grow. The second is the reason for trimming and shaping. Saplings plastic, large branches left too little