1. Garden construction: Plant with 2x3m spacing. Leave 40-50% of the stems after planting. 2. Shaping: a. Leave 2/3 short sections for the selected 3-4 main branches in the natural winter shears, and the first main branch should be 30 cm off the ground. Cut the main branches lightly in the coming winter, leaving 2-3 side branches for each main branch. B. Leave 5-6 main branches on the happy tree with delayed evacuation and layering, plant them two layers behind the trunk, and then cut off the central trunk. When the new length is 20-30 cm, the central trunk and three main branches are selected for cultivation, and the others are leveled or leveled. In winter, the extended branches of the central trunk are cut off by 40-50 cm, and inward buds are left at the incision. The main branch is cut slightly shorter than the central trunk, and there are exogenous buds at the incision. C, many main branches are naturally happy without a central trunk, and 4-6 primary and secondary backbone branches are formed by the trunk. 3. Artificial pollination to reduce physiological fruit drop: collecting flower buds, collecting pollen and artificial insemination at the initial flowering stage. You can also use cotton balls to knock the blooming branches for artificial pollination. 4. Strengthen the management of water and fertilizer to prevent and control pests and diseases. 5. Fruit thinning in time to reduce nutrient loss. 6. Summer tube: wipe off the rootstock buds in time, and after selecting the main branch, pull and loosen the other branches; In May and June, when the new height is slightly greater than 30cm, the core is removed to mature leaves; Draw 60 degrees for the main branch and 80 degrees for the auxiliary branch; July is sparse. Harvest in time to ensure quality. ? Field management plum trees can be covered with plastic film or grass when planting, which plays the role of moisture conservation and alkali suppression, and it is feasible to intercrop short-stem crops in young trees. Loosen the soil and weed in time after irrigation in the growing season. After the fruits are harvested, apply base fertilizer, and young trees apply base fertilizer 10k g/ plant. The full fruit period is 50Ks/ plant. Base fertilizer is generally applied in furrows with a depth of 40 cm and a width of 30 cm. Projecting an annular fertilization ditch along the periphery of the crown, evenly applying fertilizer into the ditch and filling it in time. Or dig fertilization ditches on both sides of the crown periphery (east-west or north-south) and fertilize alternately every other year. Topdressing can be applied twice a year, before flowering (mid-late March) and at the early stage of fruit expansion and flower bud differentiation (mid-June). Young trees should be applied100-200g per plant at each time, and 400g per plant at full fruit stage. The ratio of nitrogen, phosphorus and potassium fertilizer is 2: 1: 2. Topdressing can be applied in furrow, and shallow furrows with a depth of 15em and a width of 30em can be dug from east to west and from north to south under the crown projection. After fertilization, backfill soil in time. Generally, irrigation should be carried out during germination (mid-late March), fruit development (early May), flower bud differentiation (mid-June), fruit hardening before maturity (mid-July), fruit harvesting (mid-August) and soil freezing (165438+1early October), and the irrigation quota is 400-0. When constructing gardens on the edge of desert outside agricultural areas, if possible, water-saving irrigation methods such as drip irrigation or micro-sprinkler irrigation should be advocated. According to the soil conditions and evaporation, the irrigation period is 4-7 days, and the irrigation amount should be 50-60em each time, which is the main distribution layer of roots in the soil. ?