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一种改造劣质果园的苹果“倒干更新”新技木,最近在山东省牟平县研究成功并大面积推广。所谓“倒于更新”,就是将具有一定树龄、一定干径的劣苹果树,在树干基部锯割一部分,将树干拉倒,选择出两个适当的侧枝埋在地下加以固定;同时,在锯割的断面上嫁接所要更新的新品种。这样,嫁接长成的新树站着结果,原来的老树躺着结果。数年后新树形成一定的树冠和产量,就将老树搬掉。施行这种方法,由于砧木的根系发达,营养充足,所以果树改接后嫁接成活率高,树
A new technology to rebuild inferior orchards, “Drying and Renewing”, was recently successfully researched and popularized in Muping County, Shandong Province. The so-called “down to update”, is to have a certain age, a certain dry diameter of the poor apple tree sawing a part of the trunk base, the trunk down, select two appropriate side branches buried in the ground to be fixed; the same time, sawing Section of the graft to be updated on the new varieties. In this way, the new tree grafted into standing results, the original old tree lay the result. A few years later the new tree forms a crown and yields the old tree. The implementation of this method, due to rootstock developed rootstocks, adequate nutrition, so after the succession of fruit trees grafting survival rate, tree