1. Strengthen the management of the germination period
top dressing. Apply sprouting fertilizer. The sprouting fertilizer is mainly nitrogen fertilizer, and appropriate amounts of phosphorus and potassium fertilizers are applied. The amount of fertilizer used this time accounts for 30% of the annual fertilizer amount. Generally, a jujube tree should be applied with half a catty of urea, 1.5 catties of superphosphate, and a load of human and animal manure. If the amount of fruit is too large or small, the amount of fertilizer should be appropriately increased or decreased. Fertilization method: Dig nests or trenches under the canopy. Diligently apply root and external fertilizer. During the flowering and leaf development period, spray 0.2% boron fertilizer once on the canopy, and spray 0.3% potassium dihydrogen phosphate plus 0.4% urea 3~4 times during the fruit stabilization and shoot period, with an interval of 5~7 days. Supplement inadequate nutrition.
Spray water reasonably. During the flowering period of the jujube tree, when the temperature is dry, spray clear water in the morning and evening to ensure the flowering and pollination of the jujube tree and increase the fruit setting rate.
2. Do a good job in soil management
One is to fully cultivate and loosen the soil in winter if there is no cultivating or incomplete digging of the soil, so as to improve fruit setting; the second is to open trenches and build "tile-backed" boxes or make tree trays to thicken the loam layer of the roots; It is a straw covering the tree tray. Straw mulching can not only keep moisture, increase temperature, but also increase fertilizer.
3. Do a good job in branch management
Re-pruning before flowering is an effective measure to reduce nutrient consumption of jujube trees and increase fruit setting rate. Therefore, jujube trees that have not been pruned in winter or that have been incompletely pruned should continue to be pruned or supplemented. At the same time, do a good job in promoting, pulling, controlling, hanging branches of jujube trees in spring. Do a good job of wiping jujube heads. The reproductive growth and vegetative growth of jujube trees are synchronized. Wiping jujube heads is to control reproductive growth, promote vegetative growth, and improve fruit setting.
4. Do a good job in spring pest control
Spring is the budding period of jujube trees. At this stage, jujube trees mainly include jujube step, jujube gall midge, red spider, jujube leaf tick, tortoise bug, jujube flying elephant, anthracnose, black rot, and brown spot. And other pests and diseases. The following measures can be taken for the prevention and control of these diseases and insect pests: spray 3~5 Baume lime sulfur mixture before germination to prevent red spiders, tortoise scales, anthracnose, black rot, brown spots, etc., remove overwintering pathogens, and reduce initial invasion Source of contamination; use black light to trap and kill adult jujube armyworms; spray pesticides on the ground and shake the tree in the early morning to make the frightened pests fall and poison to death. When the jujube buquda reaches 7.5 heads per 100 shares or the jujube leaf tick reaches 0.5 heads per leaf, spray the tree with 20% fenvalerate 5000 times solution, or 50% phoxim + 0.3% urea; Sprinkle phoxim granules in the tree trays within 1 meter and hoe them shallowly to kill the unearthed jujube gall midge, jujube bud weevil, etc.
5. Do a good job in the management of newly planted jujube trees
Loosen the soil and water. The loose soil is preferably shallow pine, and each plant must be watered thoroughly while pine. The straw covers the tree tray with a width of more than 1 meter and a thickness of 5 cm to 7 cm; thickened soil layer builds up the tree tray; strict control is unreasonable The inter-species. Interplanting corn, sweet potato and high-stalk crops is strictly prohibited.
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