How to manage the young fruit period of jujube?

How to manage the young fruit period of jujube? Please guide the young fruit period of jujube can refer to the following methods for management: 1. Watering and fertilizing. Due to early defoliation and late fruit harvest last year, the tree potential is generally weak this year, and the physiological defoliation of some jujube trees is serious. Therefore, fertilizer and water replenishment must be carried out, and fertilization should be carried out at the same time as underground fertilization and spraying fertilizer on trees. Underground fertilization can be combined with watering, generally, each fruit tree applied 0.4 kilograms of diammonium phosphate and 1 kilogram of potassium sulfate. Foliar fertilizer spraying can choose urea solution, potassium dihydrogen phosphate solution, jujube solution and so on. In the prevention and control of diseases and insect pests, spraying the fertilizer solution mixed with the pesticide solution can not only save labor, but also have a synergistic effect on pesticides. two。 Prevent fruit drop. Because the tree is weak, the fruit will drop due to insufficient nutrition supply. In order to reduce the fruit drop, 20ppm naphthylacetic acid can be sprayed on the crown of the tree once every 7-10 days for 2-3 times. 3. Pest control. The pests in this period are mainly green blind stink bugs, peach heart borer and red spiders. Special attention should be paid to control. If the control is not timely, it will cause fallen leaves and fruits. You can choose 25% chlorpyrifos EC 800 × 1000 times, 4.5% cypermethrin EC (Tianlongbao) EC or water emulsion 1500 × 2000 times, 1.8% avermectin (Funong) EC 3000 × 4000 times, 15% chlorpyrifos EC 1500 × 2000 times, spray once every 5 days. The main diseases in this period are anthracnose, jujube rust, fruit shrinkage, brown spot, ring streak and so on. Bordeaux spray control with 30% Longdenfulian suspension 1000 ×, 50% methyl topazine suspension 1000 × 1200, triazol 800 times, 77% Dounin 600 × 800, and 1azol 200 times can be used for control. In the future, according to the rainfall, the rain will spray more, and the rain will spray less, usually every 7 to 10 days. The effect of alternating use of Donin or Bordeaux solution and other fungicides is better. At the same time, attention should be paid to the quality of the spray when spraying fungicides, including the upper and lower crown, inside and outside the chamber, especially the back of the leaf, so as to improve the control effect of the disease. In addition, for jujube trees with serious iron deficiency, iron supplement should be carried out and 1500 times of iron solution should be added when spraying. Click to get more jujube planting techniques click to get more fruit planting techniques