How to deal with the latest Citrus trees after Frost injury

The market of citrus is still very large in our country, and it also has a very extensive planting area in our country. The peak season of oranges is generally autumn and winter, but because the temperature of autumn and winter is relatively low. Although citrus is the fruit of the season, citrus trees are also prone to frost damage if they are not well managed. So how to deal with citrus trees after freezing injury? Today, the editor will give you a brief introduction. Let's take a look at it.

1. Timely fruit harvesting

If citrus trees are frozen during the fruiting period, then the first thing we should do is to harvest the fruit in time. Timely fruit picking can effectively reduce the load of fruit trees, avoid consuming too much nutrition, and affect the flowering and fruiting of citrus trees in the second year. And it can also prevent the frozen fruits from producing bacteria and spreading on the fruit trees, leading to the aggravation of the disease. When picking, we should pay attention to protect the branches to avoid injury. After picking, the fruits will be classified and put on the market as soon as possible, and the frozen fruits should be concentrated for deep burial and burning.

2. Reasonable pruning

After the freezing injury of citrus trees, we should pay attention to reasonable pruning according to the degree of freezing injury of citrus trees. Mainly citrus saplings, if the branches are not hurt, the leaves are frozen and do not wither and fall, then the leaves should be removed in time. Avoid excessive loss of nutrients and water in trees and prevent citrus branches from dying. If the branches are frozen and dry, they should be pruned in time after sprouting, keep the healthy branches and cut off the dead parts. Adult citrus trees will have fallen leaves after frost injury, and the flowering rate will increase, but there are a large number of abnormal flowers, so the fruit setting rate is not high. Therefore, it is necessary to timely eliminate abnormal flowers and too many words. For trees with severe freezing injury, all flowers should be thinned to promote the emergence of new shoots.

3. Ploughing and fertilization

The main purpose of mid-tillage is to renew the old roots and promote the emergence of new roots, in which the depth of loose soil is maintained at about 12 cm. And after the freezing injury of citrus trees, it is necessary to topdressing as soon as possible to promote new shoots, to ensure that the tree potential is restored as soon as possible, so as to avoid excessive impact on yield. Fertilizer is mainly available nitrogen fertilizer, it is best to apply water and fertilizer, mainly to apply a small amount of more. Combined with the ploughing work, each plant was applied with an appropriate amount of mature farm manure or compound fertilizer to promote root development. At the same time, an appropriate amount of foliar fertilizer can be sprayed every ten days or so to restore the growth of citrus trees as soon as possible.

4. Pest control

After freezing injury, citrus trees have a lot of tree potential, and the resistance of the trees will be reduced, so it is easy to produce a variety of diseases and insect pests. Therefore, we should also pay attention to the prevention and control of diseases and insect pests. After freezing injury, we should spray chemicals in time to prevent them. Methyl topiramate can be used to spray inside the crown to prevent diseases such as resin disease and anthrax. It was first sprayed when the new buds of citrus trees germinated about 50 mm, and then re-sprayed when the new leaves unfolded and the new shoots were ripe.

The above is a brief introduction to how to deal with the freezing injury of citrus trees. That's all for today's introduction. This article is for reference only. I hope it can be helpful to everyone.