Frozen pomegranate tree how to control this fall

The cold weather in winter and spring has caused the pomegranates in Yuanshi County to suffer frost damage for decades. The young tree is seriously injured and there is almost no production this year. However, after the timely and self-rescuing of the majority of farmers and careful management, the pomegranate trees recovered after a growing season. Most of the trees grow well and the trees can be restored to the pre-disaster canopy. After the saplings with dead branches were cut dry, the growth of new sprouts was all around 1.5 meters, and the growth was good. It is expected that the output of the new sprouts could recover more than 70% in the next year. For the tree growth this year, the following points should be noted in the management of autumn and winter seasons: 1. Early application of organic fertilizer, rejuvenation of the tree. Due to the effects of frost damage, the tree vigor was severely weakened, the root system was seriously damaged, and the growth of new shoots on the tree was not substantial. Therefore, after mid-September, organic fertilizer should be applied in a timely manner to supply trees and promote the development of branches. The types of fertilization include ring fertilizer, cake fertilizer, chicken manure, cow dung, pig manure and other coarse fats. The ageing gardens apply 8000-10000 kg per acre, and the young gardens use 5000 kg per mu. The new plant 1 to 2 years old garden can be applied on the ground, 3000 kg of Mushi. 2. Clear up the orchard and eradicate the source of the disease. Frost damage caused a significant increase in trunk rot of pomegranate. In autumn and winter, it was necessary to remove severely infected branches and dead branches as soon as possible and remove litter. For the main disease, it is necessary to completely scrape off the lesions, and cut a few knives (into the xylem), and then apply an effective eradication agent. 3. Late water control. According to the rain conditions this year, pomegranate gardens do not need to be watered before winter. 4. Pouring frozen water in a timely manner. The key to freezing the water is mastering the time. It is too early. It is unfavorable for the wintering of the tree. It is too late and the ground has been frozen. It will pose a threat to the neck and it will not reach the goal of freezing water. When the ground temperature reaches the freezing point, it is most appropriate to pour frozen water on orchards. If the temperature does not fall back after winter, the frozen water must be delayed. 5. Antifreeze is the top priority of orchard management this fall and winter. Pomegranate trees due to less fruiting this year, resulting in strong growth of new shoots, especially in severely frozen trees, one-year-old or two-year-old branches and even three-year-old branches were frozen to death, heavy retraction caused by excessive concentration of tree nutrients, new shoot growth , Branches are not full, antifreeze ability will be significantly weakened, so antifreeze measures must be put in place in the fall and winter. After falling leaves, a large amount of Bordeaux liquid is sprayed on the entire tree. One is sterilization and prevention, and the other is antifreeze and disaster reduction. The ground covers straw or grass to increase the ground temperature and reduce the cold radiation on the ground. In case of snowfall or freezing rain, remove snow or ice hanging under trees and on trees. First, reduce mechanical damage. Second, reduce ice and snow ablation to damage trees. For the pomegranate orchard, which is located 250m above sea level and close to the main mountain range in the northwest, the roots and necks are dug in combination with trenches (20cm deep) to reduce the damage of cold air to the neck. Prepare anti-freeze materials (grass curtains or hay) early for mountain elevations or hill orchards where altitude is lower or farther away from the main mountain range. Under the premise of adopting the above comprehensive measures, after the leaves are fallen, the trunk is tied and the trunk is mechanically protected. For the new park, the first two years must be fully protected, and only the trunk can be protected from the third year. If the weather does not appear to be accidental, the normal defoliation of the tree, to be trimmed early, in the fall of the tree after the mid-November can be carried out, and protect the big wound protection agent. But always pay attention to changes in the weather, such as the occurrence of severe cooling, the tree can not be normal leaves, consider postponing pruning to ensure that the tree in the coming year enough branches.

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