Grafting Propagation of Jujube

The main results are as follows: 1. In the cultivation and production of rootstocks, sour jujube seedlings are commonly used, which can be obtained by direct sowing and transportation from other places. Before sowing sour jujube, the nursery should select the sandy loam with fertile soil, then open the soil moisture to make the bed, fertilize and water, sow the seeds, mostly use strip sowing, sowing 10cm, ditch depth 3cm, and suppress after sowing. After sowing, immediately cover the seedling bed with a thin layer of straw, sprinkle water and then cover the plastic film to keep the bed moist and raise the soil temperature. after about 7 days, the buds break out one after another, and the covering grass and plastic film are uncovered at this time. Timely irrigation, ploughing, topdressing and pest control. In order to promote the thickening growth, pick the heart when the seedling is high 25cm, and wipe off the sprouting tillers below 10cm, keep the branches smooth so that they can be grafted later. 2. After the improved varieties of grafting were selected, the grafting was carried out in the middle of July, and the grafting was carried out in this period. The temperature was high and the growing season was right. The wound was easy to heal after grafting and the survival rate of grafting was high. The scion was picked with the scion, and the main bud at the base of the secondary branch on the developing branch was used, and the full bud in the middle of the scion was the best. The grafting method is the cutting method. 3. The key factor affecting the survival of grafting is whether the wound humidity and the vitality of the scion can be maintained, so the soil must be kept moist within 15 days after grafting. After grafting, the rootstock is easy to sprout and affect the growth of bud grafting. In order to concentrate the supply of nutrients on bud growth, the sprouting of rootstock should be wiped out in time. If it is found that the buds have not germinated after 15 days, the rootstock can sprout and be replanted in the coming year. The interface healed completely after a month or so, and the membrane should be untied at this time. At the same time, we should carry out intermediate ploughing and weeding, strengthen fertilizer and water management, and do a good job in pest control, so as to ensure the normal growth of seedlings and improve the quality of seedlings.