How to deal with Citrus trees after Frost injury

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

1. Timely fruit picking

If citrus trees are frozen during fruiting, the first thing we have to do is harvest the fruit in time. Timely fruit picking can effectively reduce the load of fruit trees, avoid excessive consumption of nutrients, and affect the flowering and fruiting of citrus trees in the second year. Moreover, it can prevent the frozen fruits from producing bacteria and spreading on the fruit trees, resulting in aggravation of the disease. When picking, pay attention to protecting the branches to avoid injury. After picking, the fruits shall be classified and marketed as soon as possible. The frozen fruits shall be collected for deep burial and burning treatment.

2. Reasonable pruning

After the citrus trees are frozen, we should pay attention to pruning reasonably according to the degree of citrus trees freezing injury. Mainly citrus saplings, if the branches are not damaged, leaves frozen and not withered, 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 have dried up, they should be pruned in time after germination, keep healthy branches, and cut off the dead parts. Adult citrus trees will have defoliation after freezing injury, flowering rate will increase, but the number of abnormal flowers is more, so the fruit setting rate is not high. Therefore, it is necessary to eliminate abnormal flowers and excessive words in time. For serious frost damage trees, all flowers should be thinned to promote the shoot hair.

3. Intertillage and fertilization

Intertillage is mainly to renew the old roots and promote the pumping of new roots, in which the depth of loosening is maintained at about 12 cm. And after citrus tree freeze injury, topdressing should be applied as soon as possible to promote new shoots, ensure tree vigor to recover as soon as possible, and avoid excessive impact on yield. The fertilizer is mainly available nitrogen fertilizer, and it is best to apply water and fertilizer, and mainly apply a small amount of fertilizer. Combined with intertillage, apply proper amount of decomposed farm manure or compound fertilizer to each plant to promote root development. At the same time, it can spray appropriate foliar fertilizer every ten days or so to promote the recovery of citrus tree growth as soon as possible.

4. Pest control

Citrus trees are very vigorous after being frozen, and the resistance of the tree body will also decrease, so it is easy to produce various 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 for prevention. Methyl thiophane can be sprayed inside the crown to prevent diseases such as resin disease and anthracnose. Spray citrus trees first when they are about 50 mm old and then again when they are young and mature.

The above is a brief introduction to how to deal with citrus trees after freezing. Today's introduction is here, this article is for reference only, I hope to be able to help you oh!