Jujube management: how to manage the jujube fruit expansion period?

How to manage the fruit expansion period? Please introduce the management method. After the jujube fruit enters the expansion period, a large amount of nutrients stored in the tree body are consumed due to heavy vegetative growth and reproductive growth, and it is just the time when the nail mouth has just healed, which is the critical period for the root system to absorb nutrients rapidly. Therefore, the jujube tree is weak, lack of nutrition, and the ability to resist the influence of adverse external factors is reduced, often manifested as yellow leaves, deciduous leaves, fruit drop, etc. The solution can refer to the following methods for jujube tree management: 1. Anti-fruit drop: young fruit expansion period, fruit often due to insufficient nutrition supply and physiological fruit drop phenomenon, in order to reduce fruit drop, can be sprayed in the crown of the tree, once every 7~10 days, continuous spray 2~3 times. 2. Fertilization: jujube trees without topdressing should take advantage of wet favorable conditions after rain or timely topdressing before watering. The jujube trees in the full fruit period are applied with 0.8~1 kg of diammonium phosphate and 1 kg of potassium sulfate to improve the nutritional level and disease resistance of the trees; 3. Pay attention to the prevention and control of pests and diseases: the main pests in this period are peach fruit borers, red spiders, etc., and special attention should be paid to prevention and control. If the control is not timely, it will seriously cause deciduous and fruit drop. 4.5% beta-cypermethrin EC or 15% pyridaben EC 1500~2000 times solution + new lipid membrane can be used for control, spraying once every 5~7 days. It is particularly worth mentioning that attention should be paid to the quality of spraying when spraying pesticides. The upper and lower parts of the crown, inside and outside the tree bore, especially the back of the leaves, should be sprayed to improve the control effect of diseases and insect pests. Click for more jujube planting techniques Click for more fruit planting techniques