1. In the production of rootstocks, commonly used rootstocks are jujube seedlings, and sour jujube seedlings can be directly sown and transferred from the field. Before jujube sowing, the nursery should select sandy loam soil with fertile soil, and then open a bed to make bed, fertilize, sow after watering, use drills, sowing 10cm, ditch depth 3cm, suppression after sowing. After sowing, a thin layer of straw or the like shall be immediately laid on the seedbed, sprinkled with water and then covered with a plastic film to keep the surface of the bed moist and increase the soil temperature. After about 7 days, the young shoots are successively broken and the soil is opened. Grass, plastic film, timely irrigation, cultivator, topdressing and pest control. In order to promote bold growth, when the seedling height 25cm, picking the heart, and erase the buds below 10cm, keep the branches smooth, so that grafting.
2. Grafted varieties were selected and grafted in mid-July. Grafting was conducted during this period. The temperature was high and the growth season coincided. After grafting, the wounds were easily healed and the survival rate of grafting was high. The scions are taken along with the buds, the buds of the secondary branches at the base of the development branch are used, and the buds at the middle of the development branch are the best. Grafting method using cutting method.
3. The key factor influencing the survival of grafting after grafting is the ability to maintain the humidity of the wound and the viability of the scion. Therefore, within 15 days after grafting, the soil must be kept moist. After grafting, the rootstocks are prone to sprouting, affecting the growth of buds, and in order to enable the concentrated supply of buds to grow, the sprouts of the rootstocks should be erased in time. If sprouting is not found after 15 days, leave rootstocks to sprout and wait until next year for patching. About one month later, the interface completely healed. At this time, the membrane should be loosened. At the same time, we should carry out cultivator and weed control, strengthen fertilizer and water management, and do a good job in prevention and control of pests and diseases to ensure the normal growth of seedlings and improve the quality of seedlings.
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