Cold weather is easy to cause frostbite of pomegranate trees. Is there any way to keep pomegranate trees from frostbite?

Cold weather is easy to cause frostbite of pomegranate trees. Is there any way to keep pomegranate trees from frostbite? Pomegranate trees are suitable for planting in the north and south of China, but the temperature difference between the north and the south is relatively large, especially in winter, the temperature in the north often exceeds-10 degrees, and it is even more icy when it is cold. If the pomegranate trees planted are not properly managed, they are likely to freeze to death, especially the small pomegranate trees that have just been planted for 1~2 years, which are small and lack nutrition.

If the weather is getting colder and colder, it is better to go from high to low temperature. If it is a sudden cold wave and cold air, the sudden low temperature can easily lead to frostbite and even freeze pomegranate trees. So how to take effective preventive measures in winter to avoid freezing pomegranate trees?

1 Selecting pomegranate varieties with strong cold resistance If pomegranate varieties planted in the south are introduced to the north, the cold resistance will be less. It is necessary to introduce a cold-resistant variety, Daqingpi sweet pomegranate, which has good disease resistance and drought resistance. Pomegranate fruit is also good in transportation, but the most obvious is cold resistance. The sweet pomegranate with big green peel has the best cold resistance. At the low temperature of MINUS 20 degrees, you can still spend the winter safely with a little maintenance and heat insulation measures.

If the winter temperature in the planting area is not too cold, that is, minus 7~8 degrees, pomegranate varieties in Tunisia can be selected. According to the specific planting, pomegranate saplings are easy to freeze to death if they are not frozen, but pomegranate trees are more and more resistant to freezing injury and can be planted safely in the open field for the winter.

2. Enhance the cold resistance of pomegranate trees through rational fertilization. In the middle and late period of pomegranate tree growth, the use of nutrient fertilizers should be reduced. Because nutrient fertilizer is easy to cause pomegranate branches to grow too fast, the accumulation of nutrients in the internal structure of pomegranate branches that grow too fast is too small, which is not conducive to improving cold resistance. After pomegranate fruit is obtained, organic fertilizer should be applied to the roots. Organic fertilizer can only be used after comprehensive composting. Generally speaking, they should be applied to every pomegranate seedling. It is a good condition for pomegranate trees to harvest fruit until all the dead leaves are organic fertilizer.

Artificial auxiliary cold protection and whitewashing trunk is one of the common cold protection measures for trees in northern China. You can immediately wipe it with omethoate scraps and quicklime powder. Straw binding, corn straw and agricultural plastic film can be used to prevent tree stems. After the original small pomegranate seedlings are planted, the branches of pomegranate trees are relatively soft, which can be flattened, buried and removed in spring. Pomegranate seedlings prepared in advance can also be increased to just planted in spring.

4 Choose a sunny place to plant pomegranate seedlings. Pomegranate trees love sunshine, so they should be planted in the sunny downwind, so that when the sun comes out in the morning, it will shine on pomegranate trees, which is much better than the cold shade. If necessary, it can be used in the fresh air outlet in the north to enhance the resistance to the cold wind.

5. Spraying chemicals to improve the cold resistance. Pomegranate trees grow healthily and have stronger cold resistance than Wang Chang. In the vigorous growth period of pomegranate, 65,438+0,000 times uniconazole can be sprayed on the whole plant to control the height and shorten the internodes without affecting the results. It is best to spray it once every 7 days or so, and spray it continuously for 2~3 times.