Management techniques of Cherry trees in Winter

Cherry tree is a kind of tree that is more tolerant to survival, even in the cold winter in the north, it can survive. If cherry trees want to survive well and have a high rate of fruit, they must do all the work well. The management method of cherry trees in each period is different, the winter temperature is low, the problems will increase, so winter management is more important.

Management techniques of Cherry trees in Winter

1. Winding up. After the fruit is harvested, the withered branches, fallen leaves, rotten fruits and weeds left under the tree have become the hideouts of many germs and pests. Therefore, during the period from the dormancy of pests in autumn to the occurrence of insect stings in the following year, personnel should be organized to clean them thoroughly, burn them centrally or compost them at high temperature in the orchard.

2. Overturn. In winter, there are many fruit tree pests overwintering in the soil, such as peach heart borer, jujube inchworm and so on. To this end, before the earth freezes, turn the soil under the trees again to a depth of 25 mures and 35 centimeters, so that the pests overwintering in the soil can be turned out of the ground to freeze to death or be eaten by birds, or the pests on the surface or topsoil can be turned into the depths of the underground soil to suffocate them.

Ploughing the orchard will not only improve the physical and chemical properties of the soil, but also help to kill the diseases and insect pests overwintering in the soil, but with less root damage.

3. Pruning. After a year of growth, fruit trees are easy to cause tree shape disorder. In order to form a good crown structure, prolong economic life and achieve high quality and stable yield, deciduous fruit trees had better be pruned from late December to January in winter. In general, young trees and trees with strong potential are cut lightly, while those with old trees and weak trees are re-trimmed, and the trees in the peak fruiting period and medium tree potential are pruned to adjust their growth and fruit in the following year.

Cherry trees apply water to prevent insect pests in winter

In recent years, due to less rain and snow in winter and severe drought, it is suggested that the orchard should be watered once and combined with fertilization. Watering pre-flowering water every half a month can not only alleviate the drought, but also reduce the ground temperature, in order to delay the flowering time of fruit trees. And spray 5 degree stone sulfur mixture, or 1:2.5:200Be multi-liquid in time, to sterilize and disinfect the trees. Through "whitening", it can also reduce the absorption of solar ultraviolet rays, delay the tree heating up too quickly, so as to delay the flowering time, so that the fruit trees in full bloom can be in a more suitable pollination temperature environment, so as to improve the fruit setting rate.

Cherry tree pruning in winter

1. Cut short. Cutting off part of an annual branch is called truncation. Leaf buds must be left under the cut of a short branch. The function of truncation is to reduce the number of leaf buds and flower buds on the truncated branches, strengthen the growth ability of new shoots, reduce the branching position and enhance the branching ability.

2. Thinning branches. The thinning of branches from the base is called thinning, also known as pruning. Branch thinning can reduce the branch density in the crown, improve the ventilation condition of the crown, make the storage nutrition in the tree relatively concentrated, and promote the growth of new shoots. After branch thinning, it can inhibit the part above the wound and promote it. Removing useless branches that are thin and weak, diseases and insect pests, overgrowth, overlap and dense shading can promote the remaining branches.

3. Long release. Do not cut the annual branches and let them grow naturally. Long blooming can retain the most buds on the branches and ease the growth of new shoots in the next year. The growth of overgrown fruit-bearing branches or long-fruit branches can weaken the apical dominance and promote the formation of medium-and short-fruit branches.

4. Retract. Refers to the shortening of perennial branches, also known as shrinking. Retraction can reduce the total length of branches, centralize the supply of nutrients and water to the retained branches, and promote the growth of lower branches, which is beneficial to the rejuvenation of trees. Its function is to improve the light conditions in the crown, reduce the fruiting position, change the extension direction and angle of the elongated branches, control the crown and prolong the fruiting years.

Treatment of insect pests and diseases of cherry trees in winter

The main results are as follows: 1. Cut off the diseased branches, and also deal with the dead diseased trees in the local branches. at the same time, clean up the dead diseased branches in the same direction, cut off the rotten roots, and apply compound carbendazim and mancozeb 400-600 times.

2. Clean up the dead trees, clean up the trees that died of the disease, clear out the tree hole soil, expand the hole to 100cm2, deep 60cm, fill in 20cm soil fertilizer, 20cm new soil, in order to replant trees in the coming year.

3. Check the branches of fruit trees and remove the insect eggs from the branches of fruit trees.

There will be a lot of problems after cherries are ripe and picked in winter, so during this period, it is necessary to strengthen the cleaning of orchards to avoid being infected by bacteria. Winter pruning is also very important, which is related to the branch growth and fruit rate in the coming year, so this part of the work must be done well.