目前,哈密大枣有8个品种,不同品种间丰产性、单果重、果核大小、含糖量、果形、成熟时的色泽有较大差异,其中以大叶哈密大枣表现最佳。许多枣农利用低产哈密大枣枣树的根系和树冠,自发进行高接换头,从而实现增加产量、提升品质、及早见效的目的。现将哈密大枣高接换头技术总结如下。一、准备工作1.接穗准备选择丰产高效的优质枣树,为低产枣园高接换 Currently, there are 8 varieties of Hami jujube, different varieties of high yield, fruit weight, fruit size, sugar content, fruit shape, mature color when there is a big difference, of which the big leaf Hami jujube performance best. Many jujube farmers use the roots and canopies of low-yield Hami Jujube jujube trees spontaneously to carry out high head replacement, so as to achieve the purpose of increasing output and improving quality as soon as possible. Now Hami jujube high head replacement technology is summarized as follows. First, the preparatory work 1. Scion preparation Select high yield and high quality jujube, low yield Zaoyuan high exchange