How to manage the young fruit period of winter jujube?

How to manage the young fruit period of winter jujube? Please introduce the method: the blooming period of winter jujube is over, the heavy vegetative growth and reproductive growth consume a lot of nutrients stored in the tree, and this is the critical period when the root system competes for nutrition rapidly after the nail mouth has just healed. It is also the period when the jujube tree is weak, lack of nutrition, and the weakest resistance to external adverse factors, often showing yellow leaves, fallen leaves, falling fruit, etc., and is most vulnerable to diseases. In this period, the management of winter jujube should be strengthened. 1. Prevent fruit drop. In the later stage of young fruit expansion, the fruit often falls due to insufficient nutrition supply. in order to reduce fruit drop, the canopy can be sprayed with 20pppm naphthylacetic acid and 0.3% potassium dihydrogen phosphate solution. If there are symptoms of nitrogen deficiency, 0.3% urea solution can be sprayed together, once every 7 days and twice. two。 Reasonable topdressing. After setting fruit, winter jujube should be watered in time and applied with compound fertilizer or organic compound fertilizer rich in nitrogen, phosphorus, potassium, iron, boron, calcium, zinc and other essential elements and trace elements of winter jujube. General young trees apply 0.2-0.3 kg diammonium phosphate and 0.5 kg potassium sulfate, doubling fruiting trees and applying ring-shaped multi-point application. 3. Timely prevention and control of diseases and insect pests. The main pests in this period are peach heart borer, red spider and green blind Toona sinensis and so on. Special attention should be paid to prevention and control. If the control is not timely, it will seriously cause fallen leaves and fruits. You can choose Suechongqing 2000 times or Wanling 3000 times + 1.8% avermectin EC 3000 times to control jujube rust, leaf spot, ring disease and so on. 100,140 units of agricultural streptomycin + Baolian 1000 times solution or ketoconazole + triazole copper 800 times or terprazole 3000 times solution can be used for spray control, once every 10 days for 3 times. Pay attention to the alternate use of all kinds of pesticides in order to improve the control effect. In addition, for jujube trees with serious iron deficiency, iron should be supplemented, and each tree can be sprayed with 20 grams of chelated iron or 1500 times dilution. Click to get more jujube planting techniques click to get more fruit planting techniques