枣树木质较硬,枝弯曲。枝接法接穗与砧木的形成层不易对齐,成活率不高,仅为40～50％。宁城枣树根接法是把接穗削成肩膀头状(图三—①),插入砧木内牢固,削面皮部成直线形,与砧木的形成层相对部位多,成活率可提高到94％以上。具体嫁接方法是: 一、嫁接时间为谷雨至立夏,即枣树树液开始流动起至出叶止,大约15—20天。二、接穗选用一、二年生发育健壮的发育枝主梢,即萌发枝(图一—①)。从主梢枝条下部三分之二,每节剪断为一接穗(图一—②)。接穗枝条最好随用 Jujube hard wood, branches bent. Grafting method and scion rootstock formation layer is not easy to align, the survival rate is not high, only 40 to 50%. Ning City, jujube root connection method is to cut the scion into a shoulder head (Figure III-1), inserted into the rootstock firm, cut noodles into a straight line, and the formation of rootstock relative to the site more, the survival rate can be increased to 94% the above. Grafting methods are: First, the grafting time for the valley to the beginning of summer, jujube tree sap began to flow until the leaves only about 15-20 days. Second, the selection of scion One or two years development Sturdy branches of the main shoot, that germination branches (Figure I-1). From the lower part of the main shoot two-thirds, each section cut as a scion (Figure a-②). Scion branches with the best use