当原有柑桔果园是实生树或劣种嫁接树时,可以采用高接的办法更换优良品种。为不断提高果实品质,还可把经过良种提纯后发现的园内混杂单株和劣变单株,换接成良种;也可把优中选优后选出的优良单株,高接在其它大树上,以加速这些单株材料的繁殖利用。如果树已衰老,最好重新栽植嫁接幼树。此外,原有植株是柚子和柠檬时,不宜换接甜橙和宽皮桔类;朱桔(湖南称南桔,江西、陕西称朱红桔)亦不宜换接,因朱桔作砧木时,植株生长 When the original citrus orchard is a real tree or inferior grafting tree, you can use high-access method to replace the fine varieties. In order to continuously improve the quality of fruit, but also through the elite purified found in the park after the hybrid plants and deteriorated single plant, change into a good breed; also gifted gifted elected after the excellent single plant, followed by other large Trees to speed up the propagation of these single plant materials. If the tree is old, it is best to replant the grafted sapling. In addition, the original plant is grapefruit and lemon, should not be exchanged for sweet orange and broad-bark oranges; Zhu orange (Hunan said South orange, Jiangxi, Shaanxi, said red orange) is not suitable for exchange, because of orange as rootstock, the plant Grow