(1) spread 1. Branch method: during the dormant period of jujube trees to half a month before germination, dig a long ditch with a width of 30-45cm and a depth of 5-60cm at a distance of 2-3m from the trunk, cut off the jujube roots, and apply a proper amount of plant ash and manure to cover the ditch. When the seedling reaches 1 m, it can be moved out of the field. 2. Grafting method: Rootstock is rooted seedling or Zizyphus jujuba. It is best to use juice to flow before germination, and the second branch of jujube head is mostly used for scion. The best time for bud grafting is July-August, and the scion uses jujube head of the current year.

(2) The spacing between jujube trees should be dense and sparse, with the row spacing of 4-6 meters and 23-4 1 plant per mu. Planting period, spring and autumn, spring planting should not be too late. The hole should be deep and foot fat should be applied. Pay attention to less root damage and more fibrous roots when planting. Allocate pollinated trees by mixing planting varieties.

(1) soil management 1. Deep tillage cuts off the roots of topsoil, and removes roots and tillers at the same time. When ploughing deeply, the crown should be 30-40 cm from the periphery to the trunk. If there are too many weeds, it is necessary to carry out multiple intertillage weeding. 2. Drainage and irrigation: timely irrigation is needed in the early stage of drought to replenish soil moisture, promote root growth and reduce flower and fruit falling. Excessive rainfall before fruit ripening, timely drainage to reduce fruit cracking. 3. Fertilization: In general, basic fertilizer is mainly applied in autumn. The main topdressing from germination to flowering is nitrogen fertilizer; In the later stage, the mixed fertilizer of nitrogen, phosphorus and potassium is suitable; 0.3-0.5% urea can be sprayed during the fruit ripening to defoliation.

(2) plastic trimming 1. Shaping and pruning: the stem of the seedling is about 3cm thick and1-1.2m high. 3-4 branches were newly developed in that year, and the central main branch and the first-layer main branch were selected from the middle, and the central leading branch was retained to continue to grow upward, and 1-2 branches were reserved according to the date head expansion. 2. Pruning jujube trees can be done twice a year. Winter pruning should be carried out from late February to late March, mainly to remove dead branches, overlapping branches, over-dense branches and long upright branches in time. Summer pruning is carried out from late May to late June when the branches bloom, mainly to cut off the sprouting jujube heads in the crown.

(3) flower protection and fruit promotion 1. Adjustment of organic nutrition of trees: (1) nailing, that is, "annular peeling". The age of the tree is about 10 year, which can be opened for the first time, and the trunk is the best part. The first opening is 20-30 cm from the ground, and the width of the nail opening is 0.3-0.5 cm. Nail opening is from top to bottom, carefully operated every year, without damaging xylem and leaving a trace of phloem tissue. (2) Ziziphus jujuba: Cut off the phloem of the trunk at flowering stage. Starting from the trunk diameter of 30 cm, from bottom to top, the horizontal distance is generally 2 cm and the row spacing is 2.5 cm. Axe (tooth jujube axe) oral sex is staggered into a "needle" shape, 3 lines at a time. From late May to late June, the flowering period is generally three times a year with an interval of five days. (3) Jujube secant: This method is mostly used for main branches. At flowering stage, the cortex is cut off annularly with a sharp knife, and the curve of 2-3 circles is dried for 2-3 weeks at a time, usually 2-3 times. 2. Control growth: "Jujube tip" (jujube head coring) is mostly carried out from late May to early June. Generally, 3-5 permanent secondary branches are left and combined with fertilization, which can bear fruit in the same year. 3. Using physiological regulator: (1) spraying fruit protection drugs (such as Xinzheng 1No.) or gibberellin 15 ppm and tea acetic acid 20 ppm at the young fruit stage; (2) spraying trace rare earth elements, spraying a mixed solution of boron fertilizer with a concentration of 1/3000, vitamin C with a concentration of 300-500 and 2,4-D. ..