How to prevent the cold in late spring of fruit trees

Fruit trees are very easy to encounter cold in late spring, which refers to the rapid rise of temperature in early spring, but the climate phenomenon of low temperature in late spring will often lead to poor growth of fruit trees after flowering, affect fruit setting and hinder high yield. affect the income of fruit growers. So how to prevent this phenomenon? Let's take a look at the detailed introduction.

1. Watering to cool down

Generally speaking, the fruit trees can be watered once 7-10 days before flowering, which can significantly reduce the ground temperature, delay the time of fruit trees to germinate and avoid the late spring cold. Watering 1-2 times after germination to before flowering can delay flowering for 3-4 days, but watering before the late spring cold can not increase the ground temperature, play a preventive measure, and reduce the freezing injury of fruit trees at the same time.

2. Cover against cold

Before the late spring cold comes, plastic film and grass curtains can be used to cover fruit trees, retain the geothermal distribution, and prevent the invasion of external cold, thus reducing freezing damage. This method is generally suitable for young fruit trees or low fruit trees, and has a good effect.

3. Spraying lime water

On the other hand, for adult fruit trees or fruit trees with large crowns, the method of covering is not applicable, so the fruit trees can be sprayed with 1% lime water when the fruit blossoms in January, which can delay the flowering period of the fruit trees by 3-5 days. you can avoid the cold in spring. And lime water sprayed on tree trunks and leaves will form a protective layer, which can reduce the damage of frost to fruit trees.

4. Smoke and prevent cold

This is a simple and easy way to light firewood and grass branches in the orchard before the cold spell comes, rare open fire and more smoke, so that the smoke will form a layer of protection in the wound of the orchard until the sun comes out, so as to avoid the harm of cold current. But one disadvantage is that if the smoke comes out of the tuyere, the wind will blow the smoke away, and you need to pay attention to it so as not to burn down the orchard.

5. Foliar fertilizer spraying

Before the cold in late spring, sprouting fruit trees can be sprayed with low concentration of potassium dihydrogen phosphate solution, that is, can increase the cold resistance of fruit trees, but also reduce freezing injury. It can also be sprayed with foliar fertilizer to spray growth regulators on the plant to prolong the time of germination or flowering, so as to make the fruit trees survive the late spring cold smoothly.

The above is the introduction of how to prevent the cold in the late spring of fruit trees. I hope it can help you. If you want to know more about it, please follow us.