How to manage jujube trees in summer?

How to manage jujube trees in summer? Please give an introduction Because jujube sprouts late, flowering and fruiting are concentrated in summer. Therefore, if we want to obtain high and stable yield, we must scientifically manage jujube trees in summer according to their biological characteristics. Management methods can refer to the following: 1, pruning: into mid-June jujube head growth peak has passed, then pruning will not stimulate the main bud germination. Pruning can adjust the distribution of nutrients, reduce flower and fruit drop, and promote fruit development. Thinning branches: spring and summer jujube on the germination of new jujube head, jujube head at the base of the long branches, if no use value, should be in this kind of branch not lignified when the base thinning, in order to concentrate nutrients, promote fruit setting. Topping: The main bud grows quickly after sprouting the jujube head. If it is used for shaping, it should be cut short at 1/3 of the jujube head length in mid-June to control its prosperous length, so as to concentrate nutrition, improve fruit setting rate and improve fruit quality. 2, open a: for older strong trees, in the peak flowering period, choose sunny windless days to open a. At a smooth place 20-30 cm away from the ground, girdle a circle to xylem with a knife, 0.3-0.5 cm upward, girdle a circle again, and then strip off the phloem between the two knives. When operating, the incision is hairless, and after peeling, the wound is coated with omethoate 1000 times solution to prevent insects. And coated to prevent evaporation of water. 3. Hormone spraying at flowering stage: spraying 10-15 mg/L gibberellin or 5-10 mg/L 2,4-D solution at early flowering stage, spraying 0.3% borax at flowering stage to improve pollen germination rate. After spraying, the fruit setting rate of jujube trees was significantly increased. 4, fertilizer and water management: jujube germination, leaf development and flowering to consume a lot of nutrients, so in mid-May topdressing urea to supplement the growth of branches and leaves on ammonia demand, 5-year-old trees per plant about 500 grams. August is the fruit expansion period, so in early August to chase a fertilizer. This time, compound fertilizer rich in nitrogen, phosphorus and potassium was used, and the dosage of each 5-year-old tree was 1000 grams. After each fertilization, it is necessary to turn over and water to facilitate the fertilizer efficiency. 5. Disease and pest control: spray 25% chlorfenuron No.3 2000 times solution or 1% abamectin 400 times solution or imidacloprid 2000 times solution to control jujube gall, peach fruit borer, jujube armyworm and jujube looper in the middle and late June, and spray again after 15 days. 50% thiophanate-methyl 1000 times solution or 50% tuijunte 600 times solution was sprayed to control jujube rust in early July. The branches with jujube leprosy are thinned from the base. Click for more jujube planting techniques Click for more fruit planting techniques