Winter jujube seedlings are cold-tolerant species, and rarely cause freezing damage, but in extreme conditions Under the temperature conditions, if we do not implement effective protection measures for jujube seedlings, there is also the possibility of freezing damage. Jujube seedlings will last for more than 24 hours in the winter below -23 °C, and jujube trees may suffer from freezing damage. Moreover, the continuous low temperature and dramatic changes in temperature are the direct cause of frost damage to fruit trees. What happens if the jujube seedlings freeze? Today, I will introduce the rescue measures for the freezing of jujube seedlings to the robbery. I hope that we will have rescue measures when the freezing damage occurs, so as to avoid economic losses.

      1. Strengthen water and fertilizer management, formulate a fertilization and irrigation system suitable for the growth period of jujube in the region. Reasonable irrigation and fertilization is beneficial to the growth and development of jujube trees and storage of nutrients, thus improving the cold resistance of jujube trees. On the contrary, the number of irrigation times and the frequency of fertilization are not suitable for the period of jujube tree growth and water demand, which causes jujube trees to be greedy, and the dormancy period is postponed. The level of freezing damage of jujube trees is obviously high; mainly in the regulation of water and fertilizer, before and after control In the early stage, N fertilizer was the main factor to promote growth. In the later stage, P and K fertilizers were mainly used to store nutrients in the tree. The growth period, flowering period and fruit expansion period were timely watered. After mid-August, water was controlled to promote the complete lignification of the new branches. Cultivate robust trees. After heavy frost, the jujube garden will not put winter irrigation in principle, strictly control the soil water content of the jujube garden, keep the air in the jujube garden dry in winter, and enhance the ability of jujube trees to prevent cold and winter.

      2, strengthen pest control, prevent pests and diseases from infecting shoots, promote branch bud maturity, and strengthen the tree body. Strengthen the management of jujube field, timely weeding and weeding, and prevent grass shortage; after each irrigation, the jujube trees should cultivate the loose soil in time to prevent soil compaction and increase the ground temperature to promote the rapid growth of jujube trees. Preventing mechanical damage to trees and foraging of livestock hares can damage the bark, improve wintering resistance, and reduce the level of frost damage.

      3, the selection of local scions and varieties that are not susceptible to freezing damage, improve the resistance of jujube trees to winter and prevent the occurrence of jujube freezing damage. Variety can be selected: Moonlight jujube, Jinsi No.4 jujube, early crispy jujube and other varieties pay attention to weather forecasting and strengthen preventive measures. Under the condition of continuous low temperature in winter, attention should be paid to local weather forecast and meteorological change dynamics. In preparation for the freezing damage of jujube trees in the weather, we will strive to put the cold and antifreeze work ahead and do the corresponding countermeasures to reduce the disaster losses to the lowest level.

      5, jujube tree cold and freezing damage remedy measures: before the winter, the trunk of the jujube tree is painted white, before the white coating, first use the antifreeze to brush the trunk, until the antifreeze is fixed on the trunk and then white After snowing or jujube freezing damage, the white lime is peeled off and the white is continued. Before the winter, the jujube tree trunk straw bundle, bundle grass, wrapped cloth and other cold-proof measures; the shady-faced soil hits the wind-proof wall, the height requirement of the soil is not less than 30cm.

     6, encountered snow weather, after the snow stopped, artificially shake the snow on the branches of the jujube tree, clean the snow around the tree tray and the tree shrub. After the jujube tree freeze damage occurs, apply the fruit tree healing agent at the crack of the jujube tree and then wrap the film to restore the frozen jujube tree. The entire plant is frozen and dead in the upper part of the jujube tree. It is flat in the middle of April and promotes the new germination of the jujube from the base. The new plant with the strongest jujube is selected in the germination, and the remaining buds are wiped off and re-cultured. New jujube plants. Jujube trees that have suffered from freezing damage but have already germinated should ensure early water supply, early topdressing, supplement nutrients, promote the formation of new callus, and quickly restore the tree.