果树为什么要用嫁接繁殖果树育苗大多采用嫁接方法繁殖。那么，果树嫁接究竟有什么作用呢？为什么不直接用生产品种结的种子播种繁殖呢？这里面是有奥妙的，大致说来有以下几方面的原因：１．通过嫁接可以保持品种的“特性”苹果、梨等许多果树都是异花授粉的植物，生成的... Why should the use of fruit trees grafting breeding seedlings nursery breeding methods are mostly used grafting. So what is the role of fruit tree grafting? Why do not you directly seed the seeds of breeding seed? There is a mysterious inside, generally speaking, the following reasons: 1. By grafting can maintain the variety of “characteristics” Apple, pear and many other fruit trees are cross-pollination plants, generated ...